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SEBMOOI
Shop Manual
007
D31E,P,Pl,l’ll=~o D31 D31 &ho BOA
D37E=!i,D37p=sr
BULLDOZERS
This material is proprietary to Komatsu America International Company and is not to be reproduced, used, or disciosed except in accordance with written authorization from Komatsu America lntemational Company. It is our policy to improve our products whenever it is possible and practical to do so. We reserve the right to make changes or add improvements at any time wlthout Incurring any obligation to install such changes on products sold previously. Due to this continuous program of research and development, periodic revisions may be made to this publication. It is recommended that customers contact their distributor for information on the latest revision.
May 1997
Copyright 1997 Komatsu America International Company
oo&
CONTENTS No. of page
01
GENERAL . . . . ..~.................................................................
01-l
10
STRUCTURE
10-I
20
TESTING AND ADJUSTING
30
DISASSEMBLY
40
MAINTENANCE
AND FUNCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. ... ... ... .. . ... .. .. .. . .. .. ... .. .. ... . ... .
20-I
AND ASSEMBLY . . . . . . . . . . . . ..*.........*m.......
30-I
STANDARD . . . . . . . . . . . . . . . . . . ..n....m.........m..... 40-I % :
90
OTHERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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SAFETY NOTICE
SAFETY
SAFETY SAFETY
NOTICE
IMPORTANT
SAFETY
Proper
and
service
NOTICE
repair
is extremely
service and repair techniques are both effective designed
manual.
for safe
by Komatsu
and safe. Some of these techniques
by Komatsu
To prevent
important
recommended
for the specific
injury to workers,
The cautions
fully. If any dangerous take the necessary
situation
operation.
require the use of tools specially
is used to mark safety precautions
these symbols
should
always
arises or may possibly arise, first consider
in operation
carefully
6. Decide
are extremely
BEFORE operating
a place
in the
repair
Always
or repairs,
Smoke
workshop
parts. Always
and parts in their correct
to keep
places.
keep the work area clean and make
sure that there is no dirt or oil on the floor.
given on the decals
only in the areas provided
ing. Never smoke while
for smok-
working.
are fixed to the machine.
2. When
carrying
out any operation,
wear safety shoes and helmet. loose work clothes,
always
. Always
wear
safety glasses when
trained,
adding
hitting
oil or making
wear
safety glasses
welder
always carry
work. When
carrying
out welding
ways
welding
gloves,
wear
grind-
etc.
repairs are needed, experienced
when
have a out the
work,
apron,
al-
hand
shield, cap and other clothes suited for welding work.
or tracks
out any operation
or more workers, ating procedure
with two
always agree on the operbefore
starting.
Always
in-
form your fellow workers before starting any step of the operation.
Before starting
work,
REPAIR signs on the controls
in the operator’s
compartment.
5. Keep all tools in good condition the correct way to use them.
and learn
repairs,
to prevent
and the
from moving. blade,
ripper,
bucket or any other work equipment
starting
to the
ground.
If this
work,
lower
is not possible,
insert
the
safety pin or use blocks to prevent the work equipment
from falling.
to lock all the control
In addition,
be sure
levers and hang warn-
ing signs on them. 9. When disassembling
carrying
hang UNDER
%. Before
any
on hard, level ground,
block the wheels machine
ing parts with a grinder, 3. If welding
7. Before
park the machine
parts with a hammer. . Always
PREPARATIONS FOR WORK
Do not wear
or clothes with buttons
missing.
4. When
the tools
Manual
the machine.
out any greasing
read all the precautions which
dangerous.
and Maintenance
1. Before carrying
care-
safety, and
keep tools and removed Mistakes
in this
be followed
actions to deal with the situation.
GENERAL PRECAUTIONS
Read the Operation
The
in this manual
purpose.
the symbol A
accompanying
machine
and described
the
machine
with
before starting IO. Remove
or assembling, blocks,
jacks
support or stands
work.
all mud and oil from
the steps or
other places used to get on and off the machine. Always
use the handrails,
ladders
steps when
getting
Never
on or off the machine.
jump
impossible
or
on or off the machine.
to use the handrails,
steps, use a stand to provide
If it is
ladders
or
safe footing.
00-3
SAFETY NOTICE
SAFETY
PRECAUTIONS DURING WORK
19. Be sure to assemble original
11 When removing or
hydraulic
pressure
loosen them spurting
the oil filler cap, drain plug
slowly to prevent
plugs,
the oil from
disconnecting
or removing
of the oil, water
remove
the
pressure
compo-
or air circuits, completely
first
from
the
circuit. 12. The
and
oil in the circuits
the engine
is stopped,
are hot
so be careful
for the oil and water
carrying
out any work
to cool
before
on the oil or water
circuits.
the battery.
Always
the negative
(-1 terminal
remove
the lead from
20. When sure
installing that
high pressure
they
are
ful when circuits.
installing Also,
use a hoist
21 When
assembling
vibrate
aligning
fingers
caught
lifting
ample
capacity.
Install
the lifting
equipment
Use a hoist to prevent
ting any other
23. When
equipment
which
has
or crane
and operate
the component
hit-
part. Do not work with
any
ternal
pressure
or under
always
leave two
bolts in position
sides. Slowly
release the pres-
covers which
are under in-
pressure
from
a
sure, then slowly loosen the bolts to remove.
wiring 17. When
components,
or damage
removing
be careful not
the wiring.
may cause electrical piping,
Damaged
fires.
stop the fuel or oil
from spilling out. If any fuel or oil drips onto the floor, wipe it up immediately. on the floor
Fuel or oil
can cause you to slip, or can
even start fires. 18. As a general
rule, do not use gasoline
to
wash parts. In particular,
use only the mini-
mum
washing
parts.
00-4
of gasoline
when
When
or rotate at
careful
to check
correctly.
Be careful
not to get your
in a hole.
measuring
hydraulic
pressure,
tool is correctly
bled before taking
any measurements.
electrical
removing
tracks of track-type When
removing
rates suddenly,
removing
to break
violently
that the measuring
24. Take care when
from
15. When
16. When removing
torques.
check assem-
at the correct
part still raised by the hoist or crane.
on opposite
parts, always
two holes, never insert your
Check that the wire rope, chains and hooks use
parts
parts such as guards,
be particularly
or hand.
are free from damage.
care-
connecting
tightening
protective
or parts which
22. When
Damaged
so be extremely
or installing
use the specified
high speed,
hoses, make
tubes for high pressure
check that
fingers
Always
is be-
installed.
or crane.
spring,
by contact
not twisted.
that they are installed
first.
14. When raising heavy components,
places.
be sure
ing operated.
installing
13. Before starting work, remove the leads from
slowly
parts with new parts.
hoses and wires,
that they will not be damaged
are correctly
not to get burned. Wait
installing
tubes are dangerous,
water
when
Replace any damaged . When
with other parts when the machine
out.
Before nents
measuring
all parts again in their
places.
or installing
the
machines.
the track,
the track
sepa-
so never let anyone stand at
either end of the track.
FOREWORD
GENERAL
FOREWORD GENERAL This shop serviceman
manual
has been
an accurate
prepared
as an aid to improve
understanding
repairs and make judgements.
the quality
of the product and by showing
Make sure you understand
of repairs
by giving
the
him the correct way to perform
the contents
of this manual
and use it to full
effect at every opportunity.
This shop manual
mainly contains
service workshop.
For ease of understanding,
chapters
are further
divided
the necessary
technical
the manual
information is divided
for operations
into the following
performed chapters;
in a these
into the each main group of components.
STRUCTURE AND FUNCTION This section explains an understanding
the structure
of the structure,
and function
of each component.
but also serves as reference
It serves not only to give
material
for troubleshooting.
TESTING AND ADJUSTING This
section
adjustments
explains
Troubleshooting
DISASSEMBLY This section assembling
MAINTENANCE
checks
to be made
to be made at completion charts correlating
before
and
after
performing
repairs,
as well
as
of the checks and repairs.
“Problems”
to “Causes” are also included
in this section.
AND ASSEMBLY explains
the order to be followed
each component,
when
as well as precautions
removing,
installing,
disassembling
or
to be taken for these operations.
STANDARD
This section gives the judgement
standards
when
inspecting
disassembled
parts.
NOTICE The
specifications
time
and
with
the
contained
without latest
any
advance
in this notice.
shop
manual
Use the
are
subject
specifications
to change given
in the
at any book
date.
00-5
HOW TO READ THE SHOP MANUAL
FOREWORD
HOW TO READ THE SHOP MANUAL VOLUMES
REVISED EDITION MARK
Shop manuals are issued as a guide to carrying out repairs. They are divided as follows:
When
Chassis volume: Issued for every machine model Engine volume: Issued for each engine series
pages.
Electrical volume: Attachments volume:
I
Each issued as one volume to cover all models
These various volumes are designed to avoid duplicating the same information. Therefore, to deal with all repairs for any model , it is necessary that chassis, engine, electrical and attachment volumes be available.
DISTRIBUTION AND UPDATING Any additions, amendments or other changes will be sent to KOMATSU distributors. Get the most up-to-date information before you start any work.
a manual
(@@@...J
is revised,
is recorded
an edition
on the
bottom
mark of the
REVISIONS Revised pages are shown in the LIST OF REVISED PAGES next to the CONTENTS page.
SYMBOLS So that the shop manual can be of ample practical use, important safety and quality portions are marked with the following symbols.
FILING METHOD 1. See the page number
on the bottom of the page. File the pages in correct order. 2. Following examples show how to read the page number. Example 1 (Chassis volume):
Item
a
Safety
Special safety precautions are necessary when performing the work.
Caution
Special technical precautions or other precautions for preserving standards are necessary when performing the
10 -3 Item number (IO. Structure and Function) Consecutive page number for each item. Example
*
work.
el kg
2 (Engine volume):
Remarks
Symbol
Weight
Weight of parts of systems. Caution necessary when selecting hoisting wire, or when working posture is important, etc. Places that require
Unit number (1. Engine) Item number (2. Testing and Adjusting) Consecutive page number for each item.
3. Additional
pages:
cated by a hyphen page number. Example: IO-4 10-4-I > 1O-4-2 IO-5
00-6
Additional
Places to be coated with adhesives and lubricants, etc.
Xl, water
Places where oil, water or fuel must be added, and the capacity.
after the
File as in the example.
Drain
Places where oil or water must be drained, and quantity to be drained.
12-203 Added
Coat
pages are indi-
(-1 and number
pages -c~f~~~~~~ 12-204
special at-
ighteninc I tention for the tightening torque torque during assembly.
HOISTING INSTRUCTIONS
FOREWORD
HOISTING
INSTRUCTIONS
HOISTING Slinging near the edge of the hook may cause the rope to slip off the hook during hoisting, and a serious accident can result. Hooks have maximum strength at the middle portion.
Heavy parts (25 kg or more) must be lifted with a hoist, etc. In the DISASSEMBLY AND ASSEMBLY section, every part weighing 25 kg or more is indicated clearly with the symbol &
.
If a part cannot be smoothly removed from the machine by hoisting, the following checks should be made: I)
Check for removal
of all bolts fastening
the part to the relative 2) Check for existence ing interference
the
part caus-
part to be re-
moved.
adequate
weight
79%
71%
41%
3) Do not sling a heavy load with one rope alone, but sling with two or more ropes symmetrically wound onto the load. Slinging with one rope may cause turning of the load during hoisting, untwisting of the rope, or slipping of the rope from its original winding position on the load, which can result in a dangerous accident.
A
WIRE ROPES 1) Use
88%
SAW0479
of another
with
100%
parts.
ropes
depending
of parts to be hoisted,
on the
referring
to
the table below: 4)
Wire ropes (Standard “Z” or “S” twist ropes without galvanizing) load
mm
kN
tons
10
9.8
1.0
13.7
1.4
11.2
*
T
Allowable
Rope diameter
Do not sling a heavy load with ropes forming a wide hanging angle from the hook. When hoisting a load with two or more ropes, the force subjected to each rope will increase with the hanging angles. The table below shows the variation of allowable load kN {kg} when hoisting is made with two ropes, each of which is allowed to sling up to 9.8 kN (1000 kg) vertically, at various hanging angles.
12.5
15.7
1.6
14
21.6
2.2
16
27.5
2.8
suspended.
18
35.3
3.6
11000 kg) when
two
20
43.1
4.4
hanging
On the other
22.4
54.9
5.6
30
98.1
10.0
40
176.5
18.0
50
274.6
28.0
60
392.2
40.0
When two ropes sling a load vertically, to 19.6 kN (2000 kg} of total weight This weight
angle.
ropes are subjected
becomes
ropes
make
up
can be 9.8 kN a 120”
hand,
to an excessive
two force
as large as 39.2 kN (4000 kg) if they sling a 19.6 kN {2000 kg) load at a lifting angle
The allowable load value is estimated to be one-sixth or one-seventh of the breaking strength of the rope used.
2) Sling wire ropes from the middle of the hook.
portion
30 Lifting
60 anole
90 (deoree)
120
150 SAD00480
00-7
COATING MATERIALS
FOREWORD
COATING
MATERIALS
Sr The recommended coating materials such as adhesives, disassembly and assembly are listed below. * For coating materials not listed below, use the equivalent
Category
:omatsu code LT-IA
Part No.
Q’tY
790-129-9030
150 g
gasket
of products
Container Tube
790-129-9050
(2 pes.)
?olyethylem container
50 g
Jolyethylen~ container
20 9
l
l
LT-2
09940-00030
LT-3
790-129-9060 (Set of adhesive and hardening agent)
LT-4
790-129-9040
Adhesive: 1 kg iardeninc agent: 500 g
shown
and
l
l
greases
in this
Main applications,
l
LT-1 B
sealants
used for
list.
features
Used to prevent rubber gaskets, rubber cushions, and cock plug from coming out. Used in places requiring an immediately effective, strong adhesive. Used for plastics (except polyethylene, polyprophylene, tetrafluoroethlene and vinyl chloride), rubber, metal and non-metal. Features: Resistance to heat and chemicals Used for anti-loosening and sealant purpose for bolts and plugs. Used as adhesive or sealant for metal, glass and plastic.
Can
Adhesives
Holtz MH 705
790-12fs9120
250 g
‘olyethylem container
75 g
Tube
50 g
‘olyethylene container
29
‘olyethylene container
l
l
l
Three bond 1735
790-129-9140
l
l
l
Aron-alpha 201
790-129-9130
l
l
Loctite 648-50
LG-1
Gasket sealant
00-8
LG-3
‘9A-129-9 110
50 cc
‘olyethylene container
790-129-9010
200 g
Tube
790-129-9070
1 kg
Can
l
l
l
Used as sealant for machined Used as heat-resisting ing engine.
sealant
holes. for repair-
Quick hardening type adhesive Cure time: within 5 sec. to 3 min. Used mainly for adhesion of metals, rubbers, plastics and woods. Quick hardening type adhesive Quick cure type (max. strength after 30 minutes) Used mainly for adhesion of rubbers, plastics and metals. Features: Resistance to heat, chemicals Used at joint portions subject to high temperatures. Used as adhesive or sealant for gaskets and packing of power train case, etc. Features: Resistance to heat Used as sealant for flange surfaces and bolts at high temperature locations, used to prevent seizure. Used as sealant for heat resistance gasket for high temperature locations such as engine precombustion chamber, exhaust pipe, etc.
COATING MATERIALS
FOREWORD
Category
Komatsu code 1
Part No.
i
Container
Q’ty
Main applications, l
l
LG-4
200 g
790-129-9020
Tube
l
l
I
I
l
LG-5
790-129-9080
1 kg
Polyethylene container
l
l
Gasket sealant
LG-6
09940-00011
Tube
250 g
l
l
l
LG-7
Thr;;,b,ond
Molybdenum disulphide lubricant
LM-G
Tube
Features: Silicon based, quick hardening type Used as sealant for flywheel housing, intake manifold, oil an, thermostat housing, etc.
loo g
1
Tube
I* engine.
60g
1
can
I
Used as heat-resisting
l
IO~~~O-OOO~I1
09940-00040
200 g
G2-LI
GP-CA
SYG2-400CA SYG2-350CA SYGP-4OOCA-A Various SYG2-16OCA SYGA-16OCNCA
Various
SYG2-400M
400 g (10 per case)
sealant for repairing
Used as lubricant for sliding portion (to prevent from squeaking).
l
Used to prevent seizure or scuffling of the thread when press fitting or shrink fitting. Used as lubricant for linkage, bearings, etc.
l
General purpose type
Tube
Various
l
Molybdenum disulphide lubricant
Features: Silicon based, resistance to heat, cold Used as sealant for flange surface, tread. Used as sealant for oil pan, final drive case, etc.
790-129-9090
SYG2-400LI SYG2-350LI SYG2-4OOLI-A SYG2-160LI SYGA-16OCNLI
Grease
Used as sealant for various threads, pipe joints, flanges. Used as sealant for tapered plugs, elbows, nipples of hydraulic piping.
150 g
l
LM-P
Features: Resistance to water, oil Used as sealant for flange surface, thread. Also possible to use as sealant for flanges with large clearance. Used as sealant for mating surfaces of final drive case, transmission case.
09920-00150
l
features
Various
l
Used for normal temperature, light load bearing at places in contact with water or steam.
Used for places with heavy load
Belows type
00-9
STANDARD TIGHTENING TORQUE
FOREWORD
STANDARD
TIGHTENING
TORQUE
STANDARD TIGHTENING TORQUES OF BOLTS AND NUTS Use these torques
for metric
use torque
wrench).
Width across flats
Thread diameter of bolt mm
bolts and nuts. (Always
mm
I
Nm
I
kcm
I
8 10 12 14
10 13 17 19 22
13.251.4 31f3 66+7 113flO 177+19
1.35f0.15 3.2f0.3 6.7f0.7 11.5+1 18f2
16 18 20 22 24
24 27 30 32 36
279f30 382+39 549k59 745k83 927k103
28.5+3 39f4 56f6 76+8.5 94.5f10.5
6
1320+140 172Ok190 2210+240
Thread diameter of bolt
Width across flats
mm
mm
Nm
6
10 13 14 27
7.85f 1.95 18.6k4.9 40.2k5.9 82.35f7.85
8 10 12
135f15 175+20 225f25
bm 0.8f0.2 1.9f0.5 4.1kO.6 8.4f0.8
TIGHTENING TORQUE OF HOSE NUTS Use these torques Nominal
No.
for hose nuts. Thread
02 03 04 05 06 10 12 14
diameter
Width
Tightening
across flat
torque
mm
mm
Nm
kgm
14 18 22 24 30 33 36 42
19 24 27 32 36 41 46 55
24.5k 4.9 49+ 19.6 78.5k 19.6 137.3+ 29.4 176.5rt29.4 196.1*49 245.2+ 49 294.2f 49
2.5+0.5 5+2 8+2 14+3 18f3 20f5 2555 30*5
TIGHTENING TORQUE OF SPLIT FLANGE BOLTS Use these torques Thread
00-l0
diameter
for split flange Width
bolts. Tightening
across flat Nm
mm
mm
10 12
14 17
65.7k6.8 112k9.8
16
22
279f29
torque bm 6.7k0.7 11.5*1 28.5+3
STANDARD TIGHTENING TORQUE
FOREWORD
TIGHTENING TORQUE OF O-RING BOSS CONNECTOR Use these torques Nominal
No.
for O-ring
boss connector
Thread
diameter
Width
mm 02 03,04 05,06 IO,12 14
14 20 24 33 42
Tightening
across flat mm
torque
Nm
kgm
34.3f 4.9
3.5kO.5 9.5fl 14.51t2 43f6 89.5f13.5
93.1+9.8
Varies depending on type of connector.
142.1f19.6 421.4rt58.8 877.1k132.3
TIGHTENING TORQUE OF O-RING BOSS CONNECTOR Use these torques
Nominal
No.
for O-ring Thread
08 10 12 14 16 18 20 24 30 33 36 42 52
boss connector diameter
Width
Tightening 1 torque
across flat
mm
mm
Nm
Mm
8 10 12 14 16 18 20 24 30 33 36 42 52
14 17 19 22 24 27 30 32 32 -
7.35f1.47 11.27f 1.47 17.64f1.96 22.54f1.96 29.4* 4.9 39.2k 4.9 49k4.9 68.6k9.8 107.8f14.7 127.4k19.6 151.9f24.5 210.7f29.4 323.4k44.1
0.75+0.15 1.15+0.15 1.8f 0.2 2.3+ 0.2 3kO.5 4f0.5 5f0.5 7kl 11+1.5 13f2 15.5f 2.5 21.5f3 33f4.5
36 -
-
,Sealingsurface
TIGHTENING TORQUES OF FLARE NUT Use these torques
for O-ring
Thread
Width
diameter
SAD00483
boss connector Tightening
across flat
torque
mm
mm
Nm
Mm
14
19 24 27
24.5f4.9 49+ 19.6 78.5+ 19.6 137.3f29.4 176.5f29.4 196.1f49 245.2f49 294.2*49
2.5f0.5 5+2 8f2 14f3 18f3 20+5
18 22 24 30 33 36 42
32 36 41 46 55
25+5 30f5
00-l 1
FOREWORD
STANDARD TIGHTENING TORQUE
TIGHTENING TORQUE FOR 102 SERIES ENGINE (BOLT AND NUTS) Use these torques Thread
for metric
bolts and nuts of 102 Series Engine.
diameter mm
Tightening
torque
Nm
6 8 10 12
10 24 43 77
kgm
+2 f 4 f 6 f 12
1.02 2.45 4.38 7.85
f f f f
0.20 0.41 0.61 1.22
TIGHTENING TORQUE FOR 102 SERIES ENGINE (EYE JOINTS) Use these torques Thread
for metric eye joints of 102 Series Engine.
diameter
Tiahtenina
mm
Nm
6 8 10 12 14
8f2 10 f2 12 f2 24 f 4 36 f 5
toraue kgm 0.81 1.02 1.22 2.45 3.67
+ + f + f
0.20 0.20 0.20 0.41 0.51
TIGHTENING TORQUE FOR 102 SERIES ENGINE (TAPERED SCREWS) Use these torques Thread
screws of 102 Series Engine.
diameter
inches 1 / 16 I/8 114 318 l/2 314 1
00-12
for inches tapered
Tightening Nm 3fl 8f2 12 f2 15f2 24 f 4 36 f 5 60 f 9
torque kam 0.31 0.81 1.22 1.53 2.45 3.67 6.12
IL0.10 f 0.20 f 0.20 + 0.41 + 0.41 f 0.51 f 0.92
FOREWORD
ELECTRIC WIRE CODE
ELECTRIC WIRE CODE In the wiring diagrams, various colors and symbols are employed to indicate the thickness of wires. This wire code table will help you understand WIRING DIAGRAMS. Example: 5WB indicates.a cable having a nominal number 5 and white coating with black stripe.
CLASSIFICATION
BY THICKNESS
Applicable circuit
100
CLASSIFICATION
217
0.80
BY COLOR AND CODE
109.1
17.6
230
Starting
CONVERSION TABLE
FOREWORD
CONVERSION
TABLE
METHOD OF USING THE CONVERSION TABLE The Conversion details
Table
of the method
in this section
EXAMPLE . Method of using the Conversion 1.
Convert (I)
is provided
of using the Conversion
to enable
Table,
Table to convert
simple
conversion
see the example
from millimeters
of figures.
For
given below.
to inches
55 mm into inches.
Locate the number 50 in the vertical column at the left side, take this as @, then draw a horizontal line from @.
(2) Locate the number
5 in the row across the top, take this as @I, then draw a perpendicular
line
down from @. (3) Take the point where from millimeters 2.
the two lines cross as 0.
to inches.
Therefore,
This point 0
gives the value when
converting
55 mm = 2.165 inches.
Convert 550 mm into inches.
(I) The number 550 does not appear in the table, so divide by 10 (move the decimal point one place to the left) to convert it to 55 mm.
(2) Carry out the same procedure as above to convert 55 mm to 2.165 inches. (3) The original value (550 mm) was divided by 10, so multiply 2.165 inches by 10 (move the decimal point one place to the right) to return to the original value. This gives 550 mm = 21.65 inches.
Millimeters
to inches
0 10 20 30 40 . . .50 . .. . . . . . 60 70 80 90
00-l 4
1 mm
= 0.03937
0
1
2
3
4
5;
6
7
8
9
0 0.394 0.787 1.181 1.575
0.039 0.433 0.827 1.220 1.614
0.079 0.472 0.866 1.260 1.654
0.118 0.512 0.906 1.299 1.693
0.157 0.551 0.945 1.339 1.732
0.197; 0.591 ; 0.984 i -t 1.378; 1.772;
0.236 0.630 1.024 1.417 1.811
0.276 0.669 1.063 1.457 1.850
0.315 0.709 1.102 1.496 1.890
0.354 0.748 1.142 1.536 1.929
2.205 2.598
2.244 2.638 3.032 3.425 3.819
2.283 2.677 3.07 1 3.465 3.858
2.323 2.717 3.110 3.504 3.898
. .1.969 . . . . .. .. . .. . . .2.008 .. . . . .. . . . 2.362 2.402 2.795 2.756 3.150 3.189 3.543 3.583
.2.047 . . . . . . .. . . . 2.087 . . .. . . . . .. 2.441 2.480 2.835 2.874 3.228 3.268 3.622 3.661
.2.126 ... ....... ‘pi 2.520 2.913 3.307 3.701
2.559 2.953 3.346 3.740
2.992 3.386 3.780
in
CONVERSIONTABLE
FOREWORD
Millimeters
to Inches 1 mm = 0.03937
in
l-
1
2
3
4
5
6
7
8
9
0
0.039
0.079
0.118
0.157
0.197
0.236
0.276
0.315
0.354
10
0.394
0.433
0.472
0.512
0.551
0.591
0.630
0.669
0.709
0.748
20
0.787
0.827
0.866
0.906
0.945
0.984
1.024
1.063
1.102
1.142
30
1.181
1.220
1.260
1.299
1.339
1.378
1.417
1.457
1.496
1.536
40
1.575
1.614
1.654
1.693
1.732
1.772
1.811
1.850
1.890
1.929
50
1.969
2.008
2.047
2.087
2.126
2.165
2.205
2.244
2.283
2.323
60
2.362
2.402
2.441
2.480
2.520
2.559
2.598
2.638
2.677
2.717
70
2.756
2.795
2.835
2.874
2.913
2.953
2.992
3.032
3.071
3.110
80
3.150
3.189
3.228
3.268
3.307
3.346
3.386
3.425
3.465
3.504
90
3.543
3.583
3.622
3.661
3.701
3.740
3.780
3.819
3.858
3.898
0
0
-
-
-
Kilogram to Pound
0
1 kg = 2.2046
0
1
2
3
4
0
2.20
4.41
6.61
8.82
11.02
13.23
15.43
17.64
19.84
5
6
7
lb
8
9
10
22.05
24.25
26.46
28.66
30.86
33.07
35.27
37.48
39.68
41.89
20
44.09
46.30
48.50
50.71
51.91
55.12
57.32
59.53
61.73
63.93
30
66.14
68.34
70.55
72.75
74.96
77.16
79.37
81.57
83.78
85.98
40
88.18
90.39
92.59
94.80
97.00
99.21
101.41
103.62
105.82
108.03
50
110.23
112.44
114.64
116.85
119.05
121.25
123.46
125.66
127.87
130.07
60
132.28
134.48
136.69
138.89
141.10
143.30
145.51
147.71
149.91
152.12
70
154.32
156.53
158.73
160.94
163.14
165.35
167.55
169.76
171.96
174.17
80
176.37
178.57
180.78
182.98
185.19
187.39
189.60
191.80
194.01
196.21
90
198.42
200.62
202.83
205.03
207.24
209.44
211.64
213.85
216.05
218.26
00-15
CONVERSIONTABLE
FOREWORD
Literto U.S. Gallon l! = 0.2642
1
2
3
0
0.264
0.528
0.793
1.057
1.321
1.585
10
2.642
2.906
3.170
3.434
3.698
3.963
20
5.283
5.548
5.812
6.076
6.340
30
7.925
8.189
8.454
8.718
40
10.567
10.831
11.095
50
13.209
13.473
60
15.850
70
0
4
5
6
7
U.S. Gal
8
9
1.849
2.113
2.378
4.227
4.491
4.755
5.019
6.604
6.869
7.133
7.397
7.661
8.982
9.246
9.510
9.774
10.039
10.303
11.359
11.624
11.888
12.152
12.416
12.680
12.944
13.737
14.001
14.265
14.529
14.795
15.058
15.322
15.586
16.115
16.379
16.643
16.907
17.171
17.435
17.700
17.964
18.228
18.492
18.756
19.020
19.285
19.549
19.813
20.077
20.341
20.605
20.870
80
21.134
21.398
21.662
21.926
22.190
22.455
22.719
22.983
23.247
23.511
90
23.775
24.040
24.304
24.568
24.832
25.096
25.361
25.625
25.889
26.153
= 0.21997
U.K. Gal
\ 0
Liter to U.K. Gallon It
\\I
0
1
2
3
4
5
6
7
8
9
0
0.220
0.440
0.660
0.880
1.100
1.320
1.540
1.760
1.980
10
2.200
2.420
2.640
2.860
3.080
3.300
3.520
3.740
3.950
4.179
20
4.399
4.619
4.839
5.059
5.279
5.499
5.719
5.939
6.159
6.379
30
6.599
6.819
7.039
7.259
7.479
7.969
7.919
8.139
8.359
8.579
40
8.799
9.019
9.239
9.459
9.679
9.899
10.119
10.339
10.559
10.778
50
10.998
11.281
11.438
11.658
11.878
12.098
12.318
12.528
12.758
12.978
60
13.198
13.418
13.638
13.858
14.078
14.298
14.518
14.738
14.958
15.178
70
15.398
15.618
15.838
16.058
16.278
16.498
16.718
16.938
17.158
17.378
80
17.598
17.818
18.037
18.257
18.477
18.697
18.917
19.137
19.357
19.577
90
19.797
20.017
20.237
20.457
20.677
20.897
21.117
21.337
21.557
21.777
0
00-16
CONVERSIONTABLE
FOREWORD
kgm to ft. lb 1 kgm = 7.233 ft. lb 0
1
2
3
4
5
6
7
8
9
\ 0
0
7.2
14.5
21.7
28.9
36.2
43.4
50.6
57.9
65.1
10
72.3
79.6
86.8
94.0
101.3
108.5
115.7
123.0
130.2
137.4
20
144.7
151.9
159.1
166.4
173.6
180.8
188.1
195.3
202.5
209.8
30
217.0
224.2
231.5
238.7
245.9
253.2
260.4
267.6
274.9
282.1
40
289.3
296.6
303.8
311.0
318.3
325.5
332.7
340.0
347.2
354.4
50
361.7
368.9
376.1
383.4
390.6
397.8
405.1
412.3
419.5
426.8
60
434.0
441.2
448.5
455.7
462.9
470.2
477.4
484.6
491.8
499.1
70
506.3
513.5
520.8
528.0
535.2
542.5
549.7
556.9
564.2
571.4
80
578.6
585.9
593.1
600.3
607.6
614.8
622.0
629.3
636.5
643.7
90
651.0
658.2
665.4
672.7
679.9
687.1
694.4
701.6
708.8
716.1
100
723.3
730.5
737.8
745.0
752.2
759.5
766.7
773.9
781.2
788.4
110
795.6
802.9
810.1
817.3
824.6
831.8
839.0
846.3
853.5
860.7
120
868.0
875.2
882.4
889.7
896.9
904.1
911.4
918.6
925.8
933.1
130
940.3
947.5
954.8
962.0
969.2
976.5
983.7
990.9
998.2
1005.4
140
1012.6
1019.9
1027.1
1034.3
1041.5
1048.8
1056.0
1063.2
1070.5
1077.7
150
1084.9
1092.2
1099.4
1106.6
1113.9
1121.1
1128.3
1135.6
1142.8
1150.0
160
1157.3
1164.5
1171.7
1179.0
1186.2
1193.4
1200.7
1207.9
1215.1
1222.4
170
1129.6
1236.8
1244.1
1251.3
1258.5
1265.8
1273.0
1280.1
1287.5
1294.7
180
1301.9
1309.2
1316.4
1323.6
1330.9
1338.1
1345.3
1352.6
1359.8
1367.0
190
1374.3
1381.5
1388.7
1396.0
1403.2
1410.4
1417.7
1424.9
1432.1
1439.4
00-17
CONVERSIONTABLE
FOREWORD
kg/cm* to lb/in* 1kg/cm* = 14.2233 lb/in* 0
1
2
3
4
14.2
28.4
42.7
56.9
6
7
71.1
85.3
99.6
113.8
128.0
5
8
9
\ 0
0
10
142.2
156.5
170.7
184.9
199.1
213.4
227.6
241.8
256.0
270.2
20
284.5
298.7
312.9
327.1
341.4
355.6
369.8
384.0
398.3
412.5
30
426.7
440.9
455.1
469.4
483.6
497.8
512.0
526.3
540.5
554.7
40
568.9
583.2
597.4
611.6
625.8
640.1
654.3
668.5
682.7
696.9
50
711.2
725.4
739.6
753.8
768.1
782.3
796.5
810.7
825.0
839.2
60
853.4
867.6
881.8
896.1
910.3
924.5
938.7
953.0
967.2
981.4
70
995.6
1010
1024
1038
1053
1067
1081
1095
1109
1124
80
1138
1152
1166
1181
1195
1209
1223
1237
1252
1266
90
1280
1294
1309
1323
1337
1351
1365
1380
1394
1408
100
1422
1437
1451
1465
1479
1493
1508
1522
1536
1550
110
1565
1579
1593
1607
1621
1636
1650
1664
1678
1693
120
1707
1721
1735
1749
1764
1778
1792
1806
1821
1835
130
1849
1863
1877
1892
1906
1920
1934
1949
1963
1977
140
1991
2005
2020
2034
2048
2062
2077
2091
2105
2119
150
2134
2148
2162
2176
2190
2205
2219
2233
2247
2262
160
2276
2290
2304
2318
2333
2347
2361
2375
2389
2404
170
2418
2432
2446
2460
2475
2489
2503
2518
2532
2546
180
2560
2574
2589
2603
2617
2631
2646
2660
2674
2688
190
2702
2717
2731
2745
2759
2773
2788
2802
2816
2830
200
2845
2859
2873
2887
2901
2916
2930
2944
2958
2973
210
2987
3001
3015
3030
3044
3058
3072
3086
3101
3115
220
3129
3143
3158
3172
3186
3200
3214
3229
3243
3257
230
3271
3286
3300
3314
3328
3343
3357
3371
3385
3399
240
3414
3428
3442
3456
3470
3485
3499
3513
3527
3542
00-l 8
CONVERSION TABLE
FOREWORD
Temperature Fahrenheit-Centigrade ture reading These
Conversion
or vice versa
figures
If it is desired
; a simple way to convert
is to enter the accompanying
refer to the temperature to convert
from
temperatures
and read the corresponding
If it is desired
to convert
from Centigrade
and read the corresponding
in either
Fahrenheit
Fahrenheit
Fahrenheit
to Centigrade Centigrade
or Centigrade degrees,
degrees,
temperature
in the center
temperature
to Fahrenheit temperature
a Fahrenheit
table
into a Centigrade
column
tempera-
of figures.
degrees.
consider
the center
in the column consider
reading
or boldface
the center
column
as a table
of Fahrenheit
at the left. column
as a table of Centigrade
values,
on the right. 1°C = 33.8”F
“C
“F
“C
“F
“C
“F
“C
“F
-40.4
-40
-40.0
-11.7
11
51.8
7.8
46
114.8
27.2
81
117.8
-37.2
-35
-31.0
-11.1
12
53.6
8.3
47
116.6
27.8
82
179.6
-34.4
-30
-22.0
-10.6
13
55.4
8.9
48
118.4
28.3
83
181.4
-31.7
-25
-13.0
-10.0
14
57.2
9.4
49
120.2
28.9
84
183.2
-28.9
-20
-4.0
-9.4
15
59.0
10.0
50
122.0
29.4
85
185.0
-28.3
-19
-2.2
-8.9
16
60.8
10.6
51
123.8
30.0
86
186.8
-27.8
-18
-0.4
-8.3
17
62.6
11.1
52
125.6
30.6
87
188.6
-27.2
-17
1.4
-7.8
18
64.4
11.7
53
127.4
31.1
88
190.4
-26.7
-16
3.2
-7.2
19
66.2
12.2
54
129.2
31.7
89
192.2
-26.1
-15
5.0
-6.7
20
68.0
12.8
55
131.0
32.2
90
194.0
-25.6
-14
6.8
-6.1
21
69.8
13.3
56
132.8
32.8
91
195.8
-25.0
-13
8.6
-5.6
22
71.6
13.9
57
134.6
33.3
92
197.6
-24.4
-12
10.4
-5.0
23
73.4
14.4
58
136.4
33.9
93
199.4
-23.9
-11
12.2
-4.4
24
75.2
15.0
59
138.2
34.4
94
201.2
-23.3
-10
14.0
-3.9
25
77.0
15.6
60
140.0
35.0
95
203.0
-22.8
-9
15.8
-3.3
26
78.8
16.1
61
141.8
35.6
96
204.8
-22.2
-8
17.6
-2.8
27
80.6
16.7
62
143.6
36.1
97
206.6
-21.7
-7
19.4
-2.2
28
82.4
17.2
63
145.4
36.7
98
208.4
-21.1
-6
21.2
-1.7
29
84.2
17.8
64
147.2
37.2
99
210.2
-20.6
-5
23.0
-1.1
30
86.0
18.3
65
149.0
37.8
100
212.0
-20.0
-4
24.8
-0.6
31
87.8
18.9
66
150.8
40.6
105
221.0
-19.4
-3
26.6
0
32
89.6
19.4
67
152.6
43.3
110
230.0
-18.9
-2
28.4
0.6
33
91.4
20.0
68
154.4
46.1
115
239.0
-18.3
-1
30.2
1.1
34
93.2
20.6
69
156.2
48.9
120
248.0
0
32.0
1.7
35
95.0
21.1
70
158.0
51.7
125
257.0
-17.2
1
33.8
2.2
36
96.8
21.7
71
159.8
54.4
130
266.0
-16.7
2
35.6
2.8
37
98.6
22.2
72
161.6
57.2
135
275.0
-16.1
3
37.4
3.3
38
100.4
22.8
73
163.4
60.0
140
284.0
-15.6
4
39.2
3.9
39
102.2
23.3
74
165.2
62.7
145
293.0
-15.0
5
41.0
4.4
40
104.0
23.9
75
167.0
65.6
150
302.0
-17.8
-14.4
6
42.8
5.0
41
105.8
24.4
76
168.8
68.3
155
311.0
-13.9
7
44.6
5.6
42
107.6
25.0
77
170.6
71.1
160
320.0
-13.3
8
46.4
6.1
43
109.4
25.6
78
172.4
73.9
165
329.0
-12.8
9
48.2
6.7
44
111.2
26.1
79
174.2
76.7
170
338.0
-12.2
10
50.0
7.2
45
113.0
26.7
80
176.0
79.4
175
347.0
00-19
01
GENERAL
Specification drawings ................................ Specifications.. .............................................. Weight table ................................................. Fuel, coolant and lubricants.. .....................
Ol- 2 01-I 4 01-38 .Ol-50
SPECIFICATION DRAWINGS
GENERAL
SPECIFICATION
DRAWINGS Unit: mm
D31E-20
Serial
No.: 42001 - 42713
n-tSOP
Lb
.
c
+--xc-SL9Z
Il4F02185
01-2 0
SPECIFICATION DRAWINGS
GENERAL
Unit: mm
D31P-20
Serial
D31PL-20
Serial
No.: 45001 - 47616 No.: 45001 - 47616
D31PLL-20
Serial
No.: 45001 - 47652
z7iB ___
(
OFP +
!SZbE;(SPZE) 'XPZ41P!M
IleJaAO
’
Il4FO2186
Note: The values given are the values for D31P-20. 1: Values for D31PL-20 I: Values for D31PLL-20 In cases where there are no values given in ( ) or [
( [
I, the values are the same as for D31P-20.
01-3 0
GENERAL
SPECIFICATION DRAWINGS
Unit: mm
D31P-20A
Serial
No.: 45001 - 47616
.
oszz OS91
I-
0911
*
. .
OEPI
Il4FO2187
01-4 0
SPECIFICATION DRAWINGS
GENERAL
Unit: mm D31S-20
Serial
No.:
41001
- 41183
D31Q-20
Serial
No.:
41001
- 41183
I
OW’06Ll . ,0~9I:o~Pl
Il4FO2188
Note: The values given are the values for D31S-20. ): Values for D31Q-20 In cases where there are no values given in ( ), the values are the same as for D31S-20.
(
01-5 0
GENERAL
SPECIFICATION DRAWINGS
Unit: mm
D37E-5 Serial
No.: 3001 - 3730
0611
I
f
I-
-
9%
I -
OLZI
SL9Z
Il4FO2189
01-6
GENERAL
SPECIFICATION DRAWINGS
Unit: mm
D37P-5A
Serial
No.: 3001 - 3660
I
S69Z
Il4FO2190
01-7 0
GENERAL
D31E-20
SPECIFICATION DRAWINGS
Serial
No.: 42714 and up
Unit: mm
0611
I_
956
OLZl
_I
GENERAL
SPECIFICATION DRAWINGS
D31P-20
Serial
No.: 47617 and up
D31PL-20
Serial
No.: 47617 and up
D31PLL-20
Serial
No.: 47653 and up
Unit:
[O!XZl(O~6Z)0407
-
[LiZPEl GPZE)SFPZ
Note:
The values
given
4695
are the values
for D31 P-20.
( 1: Values for D31PL-20 [ I: Values for D31PLL-20 In cases where
there
are no values
given
in
( ) or [
1,the values
are the same
as for D31P-20.
mm
GENERAL
D31P-20A
SPECIFICATION DRAWINGS
Serial
i-
No.: 47617 and up
Unit: mm
oszz 049 I
7
,
f-
-
SBD02174
01&l0
GENERAL
SPECIFICATION DRAWINGS
D31S-20
Serial
No.: 41184
D31Q-20
Serial
No.: 41184 and up
and up
Unit:
mm
IO09I OFF
[oz9zlozPz [oP9zloP9z [9LlEl40lE
I
Note:
The values
given
are the values
[410P]ci91P
for D31 S-20.
( ): Values for D31Q-20 In cases where
there
are no values
SBD02175 given
in
( 1, the
values
are the
same
as for D31S-20.
GENERAL
SPECIFICATION DRAWINGS
D37E-5 Serial
No.: 3731 and up
I-
Unit: mm
06Ll 09PI 1
SED02176
01612
GENERAL
SPECIFICATION
D37P-5A
Serial
No.: 3661 and up
DRAWINGS
Unit: mm
0991
-
7
d
l-t OZP
-
I
SEDO2 177
GENERAL
SPECIFICATIONS
SPECIFICATIONS D31E, P-20 D3 1 P-20A D3 1 PL, PLL-20 Machine
Serial Operating
model
D31 E-20
D3 1 P-20
No.
42001 42713
45001 47616
45001 47616
45001 47616
45001 47652
331 PLL-20
weight
Bare tractor
kg
5,060
5,750
5,720
6,130
6,610
With
kg
6,090
6,700
6,800
7,050
7,550
m3
1.7
1.52
1.52
1.02
1.02
m
2.2
2.5
2.6
3.2
3.3
Gradeability
dw
30
30
30
30
30
Stability
de9
35
35
35
35
35
l
l
dozer
Blade capacity Min. turning
radius
Forward
1st
km/h
2.2
2.2
2.2
2.2
2.2
Forward
2nd
km/h
3.9
3.9
3.9
3.9
3.9
Forward
3rd
km/h
6.5
6.5
6.5
6.5
6.5
Reverse
1 st
km/h
2.4
2.2
2.4
2.4
2.4
Reverse
2nd
km/h
4.3
3.9
4.3
4.3
4.3
Reverse
3nd
km/h
7.1
7.1
7.1
7.1
7.1
Bare tractor
kPa kg/cm?
IO.2 iO.41) 21.6 to.221
!I .6 10.22)
With
kPa kg/cm21
18.1 (0.49) 25.5 IO.261
!5.5 lO.26)
dozer
I
’
12.7 (0.13)
11.8 IO.121
i
14.7 10.15)
13.7 {0.14}
Bare tractor
mm
2,910
3,035
3,035
3,025
3,410
With
mm
3,840
3,845
3,940
3,875
4,300
Bare tractor
mm
1,790
2,050
2,250
2,950
2,950
With dozer
mm
2,415
2,435
2,875
3,425
3,425
i!
To top of canopy
mm
2,735
2,735
2,735
2,735
i! .-i
To tip of exhaust
dozer
.G?
n
-
mm
2,675
2,695
2,695
2,695
2,695
mm
1,955
2,045
2,045
2,045
2,045
Track gauge
mm
1,450
1,450
1,650
1,900
1,900
Length
mm
1,880
2,185
2,185
2,185
2,570
mm
330
600
600
1,050
1,050
mm
315
380
380
380
380
pipe
To top of operator’s
Width
-
D31 P-2Ok 4 ID31 PL-20 -~
compartment
of track on ground of track shoe (standard)
Min. ground clearance (to drain port of steering
case)
% z 0
GENERAL
SPECIFICATIONS
Machine
Serial
model
No.
D31 E-20
D31 P-20
D31 P-20A
D31 PL-20
D31 PLL-20
42001 42713
45001 47616
45001 47616
45001 47616
45001 47652
type,
injection
Name
6D95L-1 4-cycle,
Type No. of cylinders
.-F
z
mm
- bore x stroke
Piston
displacement
Rated
horsepower
water-cooled,
e WA
in-line
vertical
6-95x
115
direct
4.89 (4,890)
kW/rpm IHP/rprr
52.2/2,350 264.8/1,400
{70/2,350}
Max.
torque
Nmlrpmlkgmhpn
High
idling
rpm
2,580
Low idling
rpm
700
g/kWh {g/HPt
217 (162)
{27/l ,400)
Lu
Min.
fuel
Starting
consumption
ratio
motor
24 V, 5.5 kW
Alternator
24 V, 15 A 12 V, 70 Ah x 2
Battery Radiator
core type
D-4 type
-
Damper
Wet type,
Planetary HYDROSHIFT
spring
friction
gear type, hydraulically
type
actuated,
lubrication
transmission
pump force
feed type,
forward
3 speed,
3 speed
reverse
_ Bevel
gear shaft
Spiral
bevel
gear,
splash
lubrication
type
Dry type, Steering
clutch
multiple
disc clutch,
spring
boosted,
I manually
operated,
PPC actuated
Steering
brake
IrY type,
band type,
PPC actuated,
interconnected
with clutch
Final drive
I jpur gear type, l-stage reduction gear, splash type lubrication -
Suspension Carrier
roller
Rigid
(each side)
Track roller (each side)
I 1
1
1
1
516/61618
1
2
GENERAL
SPECIFICATIONS
Machine
Serial
model
D31 E-20
D31 P-20
D31P-20A
D31 PL-20
D31 PLL-20
No.
42001 42713
45001 47616
45001 47616
45001 47616
45001 47652
---r
[ $ t
Track
Max.
shoe
MPa :g/cm2
pressure
1
Sealed and Dry, assembly Sealed and Sealed and assemb’y lubricated, lubricated type lubricated type assembly type type
Single
Arc shoe
Arc shoe
Arc shoe
Arc shoe
.37 on each a, I-c To top of operator’s compartment
mm
2,675
2,695
mm
1,955
2,045
Track
mm
1,450
1,650
2,185
2,185
330
600
315
380
01622
gauge
SPECIFICATIONS
GENERAL
Machine
model
Serial
D37E-5
No.
3001
D37P-5A
- 3730
3001
- 3660
6D95L-1
Name 4-cycle,
Type No. of cylinders
- bore x stroke
Piston
displacement
Rated
horsepower
water-cooled,
mm
in-line
vertical
6-95x
115
kW/rpm {HP/rpn
59.6/2,500
I79.912,5001
269.7/1,400
{27.5/1,400}
torque
\m/rpm {kgmirpn
High
idling
rpm
2,700
Low idling
rpm
700
g/kWh {g/HPt
217 (162)
fuel
Starting
consumption
ratio
24 V, 15 A 12 V, 70 Ah x 2
Battery Radiator
core type
D-4 type
_ Wet type,
Damper Planetary HYDROSHIFT
gear type,
force
Dry type,
bevel
forward
gear,
type
actuated,
lubrication
multiple
splash
3 speed,
reverse
lubrication
disc clutch,
spring
3 speed
type
boosted,
clutch manually
Steering
Dry type,
brake
Final drive
band type,
Spur gear type,
roller
roller
operated,
PPC actuated,
l-stage
reduction
PPC actuated
interconnected
gear, splash type
Rigid
Suspension
Track
friction
hydraulically
feed type,
Spiral
gear shaft
Steering
spring
transmission pump
Carrier
injection
24 V, 5.5 kW
motor
Alternator
Bevel
direct
4.89 14,890)
e ICC}
Max.
Min.
type,
(each side)
(each
side)
1
1
6
I
6
I
with
clutch
lubrication
GENERAL
SPECIFICATIONS
Machine
Serial
model
D37P-5A
D37E-5
No.
3001
f In/,
Track shoe
MPa (g/cm,
typl e IDry, assembly
assembly
type
Single
Arc shoe
41 on each side
41 on each side
Pitch: 154 mm
Pitch: 154 mm
Width: Max. pressure
3001 - 3660
- 3730
400 mm
Width:
600 mm
17.2 {175}
17.2 I1751
Gear type (SAL(2)-036) k!/min
Vlain control
95.5
valve
2-spool
Type
valve
Double-acting,
piston type 0
Cylinder
bore
Outside diameter
of piston rod
Piston stroke
mm
90
90
mm
40
40
mm
393
393
distance
between
pins
mm
1,109
1,109
Min. distance
between
pins
mm
716
716
mm
90
90
mm
40
40
mm
145
145
pins
mm
613
613
pins
mm
468
Max.
Cylinder
bore
Outside diameter
of piston rod
Piston stroke Max.
distance
Min. distance
between between
468
I Cylinder
bore
Outside diameter
of piston rod
Piston stroke
90
90
mm
40
40
mm
393
393
distance
between
pins
mm
1,109
1,109
Min. distance
between
pins
mm
716
716
Max.
Hydraulic
mm
tank
Externally
mounted
control
valve
GENERAL
SPECIFICATIONS
Machine
Serial
model
D37E-5
No.
f
Blade support
0
-
Hydraulic type
method
cylinder
3001
- 3660
Hydraulic type angle tiltdozer
Hydraulic type
cylinder
Max. lifting height (from ground)
mm
865
935
Max. lowering
mm
370
300
Max. tilt
mm
350
420
Angle
deg
25
25
deg
57
60
depth (from ground)
of blade
Blade cutting
z
- 3730
Hydraulic type angle tiltdozer
Type
%
3001
D37P-5A
angle
Blade width
mm
2,415
2,875
Blade height
mm
940
895
GENERAL
SPECIFICATIONS
D31E, P-20 D3 1 P-20A D31 PL, PLL-20 Machine
Serial Operating
model
No.
f
D31E-20
D31 P-20
D31 P-20A
D31 PL-20
131 PLL-20
42714 and up
47617 and up
47617 and up
47617 and up
47653 and up
weight
Bare tractor
kg
5,240
5,890
5,850
6,270
6,760
With
kg
6,270
6,840
6,930
7,190
7,700
Blade capacity
m3
1.7
1.52
1.52
1.02
1.02
Min. turning
m
2.2
2.5
2.6
3.2
3.3
Gradeability
deg
30
30
30
30
30
Stability
deg
35
35
35
35
35
l
l
dozer
radius
Forward
1st
km/h
2.2
2.2
2.2
2.2
2.2
Forward
2nd
km/h
3.9
3.9
3.9
3.9
3.9
Forward
3rd
km/h
6.5
6.5
6.5
6.5
6.5
Reverse
1 st
km/h
2.4
2.2
2.4
2.4
2.4
Reverse
2nd
km/h
4.3
3.9
4.3
4.3
4.3
Reverse
3nd
km/h
7.1
7.1
7.1
7.1
7.1
41.2 {0.42}
Z2.6 IO.231
!1.6 IO.22)
13.7 (0.14)
12.7 (0.131
kg/cm2
50.0 10.51)
25.5 IO.261
25.5 IO.261
15.7 (0.161
13.7 io.141
Bare tractor
mm
2,910
3,035
3,035
3,025
3,410
With
mm
3,840
3,845
3,940
3,875
4,300
Bare tractor
mm
1,790
2,050
2,250
2,950
2,950
With
dozer
mm
2,415
2,435
2,875
3,425
3,425
To top of canopy
mm
-
2,735
2,735
2,735
2,735
mm
2,675
2,695
2,695
2,695
2,695
mm
1,955
2,045
2,045
2,045
2,045
Track gauge
mm
1,450
1,450
1,650
1,900
1,900
Length
mm
1,880
2,185
2,185
2,185
2,570
mm
330
600
600
1,050
1,050
mm
315
380
380
380
380
kPa
Bare tractor With
kg/cm21
kPa
dozer
dozer
To tip of exhaust
pipe
To top of operator’s
Width
of track on ground of track shoe (standard)
Min. ground clearance (to drain port of steering
01626
compartment
case)
% 7 0
GENERAL
SPECIFICATIONS
Machine
model
Serial No.
f
D31 P-20A
D31 E-20
D31 P-20
42714 and up
47617
47617
and up
and up
Name
D31 PL-20
D31 PLL-20
47617
47653
and up
and UD
S4D102-1 4-cycle,
Type No. of cylinders
- bore x stroke
Piston
displacement
Rated
horsepower
water-cooled,
in-line vertical with turbocharger
mm
4 - 102 x 120
e ICC}
3.92 {3,9201
W/rpm IHP/rpn
52.2/2,350
type,
torque
lm/rpmIkgmirpn
294/l ,400 {30/l ,400)
High
idling
rpm
2,470
Low
idling
rpm
800
Min.
fuel
j/kWh {g/I-K?
217 {I621
Starting
ratio
motor
24 V, 4.5 kW
Alternator
24 V, 25 A
Battery
12 V, 70 Ah x 2
Radiator
core type
D-4 type
Damper
Wet type, Planetary
HYDROSHIFT
gear type,
force
gear shaft
Spiral
bevel
forward
gear,
type
actuated,
lubrication
multiple
3 speed,
splash
reverse
lubrication
disc clutch,
spring
3 speed
type
boosted,
clutch manually
Steering
brake
Final drive
>ry type,
band type,
ipur gear type,
roller
Track roller
operated,
PPC actuated,
l-stage
reduction
PPC actuated
interconnected
gear, splash type
with
clutch
lubrication
Rigid
Suspension
Carrier
friction
hydraulically
feed type,
Dry type, Steering
spring
transmission pump
Bevel
injection,
I70/2,350}
Max.
consumption
direct
(each side)
(each side)
1
1
1
1
2
5
6
6
6
8
GENERAL
SPECIFICATIONS
Machine
Serial
model
No.
f
D31 E-20
D31 P-20
D31 P-20A
D31 PL-20
D31 PLL-20
42714 and up
47617 and up
47617 and up
47617 and up
47653 and up
Dry, assembly
Sealed and lubricated type
Sealed and lubricated type
$;
Sealed and assembly lubricated, assembly type Single
Track shoe
Arc shoe
Arc shoe
Arc shoe
Arc shoe
37 on each side
41 on each side
41 on each side
41 on each side
46 on each side
‘itch: 154mm
Pitch: 154mm
Pitch: 154mm
Pitch: 154mm
Pitch: 154mm
Nidth: 330mm Width: 600mm MPa kg/cm:
Vlax. pressure
tVpe
17.2 (175)
17.2 11751
Width: 600mm Width: 1,050mmWidth: 1,050mm 17.2 I1751
17.2 {I751
17.2 (175}
I Gear type
(SAR(2)-045)
Umin
Vlain control
90.1 3-spool valve
valve
2-spool valve
S-spool valve
P-spool valve
2-spool valve 0
Type
Double-acting,
piston
2
type
F 0
Cylinder
bore
Outside
diameter
Piston
distance
Min.
distance
Outside
diameter
Piston
tiydraulic
70
70
mm
40
45
40
45
45
mm
393
850
393
850
850
pins
mm
1,109
1,350
1,109
1,350
1,350
pins
mm
716
500
716
500
500
mm
90
90
90
90
90
mm
40
40
40
40
40
mm
145
120
145
120
120
pins
mm
613
790
613
790
790
pins
mm
468
670
468
670
670
mm
90
-
90
-
-
mm
40
-
40
-
-
mm
393
-
393
-
-
rod
of piston
rod
stroke
Max.
distance
Min.
distance
between between
Cylinder
bore
Outside
diameter
tank
90
of piston
between
bore
Min.
70
between
Cylinder
Max.
90
stroke
Max.
Piston
mm
of piston
rod
stroke distance distance
between
pins
mm
1,109
-
1,109
-
-
between
pins
mm
716
-
716
-
-
Externally
mounted
control
valve
GENERAL
SPECIFICATIONS
Machine
Serial
model
D31 E-20
D31 P-20
D31 P-20A
D31 PL-20
131 PLL-20
No.
42714 and up
47617 and up
47617
and up
47617 and up
47653 and up
iydraulic type iltdozer
iydraulic type angle tiltdozer
hydraulictype angle tiltdozer
Type
Blade support
Max. lifting Max.
lowering
Max.
tilt
Angle
iydraulic :ylinder type
method
height
(from
depth
of blade
Blade cutting
angle
ground)
(from
ground)
.eft side: iydraulic :ylinder type tight side: kace type
iydraulic :ylinder type
iydraulictype iltdozer
iydraulic type iltdozer
.eft side: iydraulic :ylinder type
.eft side: iydraulic ylinder type
light side: {race type
light side: lrace type
mm
865
875
935
825
1,035
mm
370
325
300
345
430
mm
350
355
420
415
450
deg
25
-
-
deg
57
Blade width
mm
Blade height
mm
2,415 840
-
25 55
2,435 790
60 2,875 790
55 3,425 540
55 3,425 545
GENERAL
SPECIFICATIONS
D31S. Q-20
Machine
Serial D
Operating
model No.
up
41184
and
7,110
m3
0.8
0.8
kN {kg1
15.7 {I,6001
15.7 {I ,600I
m
2.2
2.4
deg
30
30
Forward
deg
30
31
Reverse
deg
35
35
(Right/Left)
deg
26
28
radius
Gradeability
Stability
and
6,810
load
Min. turning
41184
D31 Q-20
kg
weight
Bucket capacity Max.
D31 S-20
Forward
1st
km/h
2.2
2.2
2
Forward
2nd
km/h
3.9
3.9
g (II
Forward
3rd
km/h
6.5
6.5
p x
Reverse
1st
km/h
*
Reverse
2nd
km/h
Reverse
3rd
km/h
7.1
kPa kg/cm*} 11
53.9 IO.551
31.4 IO.321
L
Ground
pressure
I
7.1
Overall
length
mm
4,220
4,120
Overall
width
mm
1,790
2,250
Bucket width
mm
1,905
2,300
5
To top of canopy
mm
2,690
2,735
2 ;;
To tip of exhaust
mm
2,650
2,695
& 2
To top of operator’s
mm
2,020
2,035
Track gauge
mm
1,450
1,650
Length
mm
1,880
1,880
mm
330
600
mm
315
380
Width
pipe
of track on ground of track shoe (standard)
Min. ground clearance (to drain port of steering
01630
compartment
case)
up
I
GENERAL
SPECIFICATIONS
Machine Serial
model No.
D31S-20
D31 Q-20
41184 and up
41184 and up
Name
S4D102-1 4-cycle,
Type No. of cylinders
- bore x stroke
Piston
displacement
Rated
horsepower
water-cooled,
in-line vertical with turbocharger
mm
4 - 102 x 120
e ICC}
3.92 13,920)
kW/rpm {HP/rpn
52.2/2,360
{70/2,350}
29411,400
{30/l ,400)
Max.
torque
Nmirpm{kgmlrpn
High
idling
rpm
2,470
Low idling
rpm
800
Min.
fuel
Starting
consumption
ratio
motor
24 V, 25 A 12 V, 70 Ah x 2
Radiator
core type
D-4 type
Damper
Wet type, Planetary
HYDROSHIFT
gear type,
force
gear shaft
Spiral
bevel
type
actuated,
lubrication
forward
gear,
multiple
3 speed,
splash
reverse
lubrication
disc clutch,
spring
3 speed
type
boosted,
clutch foot
Steering
brake
Wet type,
drive
band type,
Spur gear type,
operated,
roller
roller
PPC actuated
PPC actuated,
l-stage
reduction
interconnected
gear, splash type
Rigid
Suspension
Track
friction
hydraulically
feed type,
Wet type, Steering
spring
transmission pump
Carrier
injection,
24 V, 4.5 kW
Battery
Final
direct
217 {162}
gikWh Ig/HPt
Alternator
Bevel
type,
(each
(each
side)
side)
I
1 5
I
1 5
I
with
clutch
lubrication
SPECIFICATIONS
GENERAL
-r
Machine Serial
D31 S-20
model No.
f
41184
D31 Q-20
and up
In/, assembly
Track shoe
MPa
Max. pressure
kg/cm’
elmin
Main control
valve
Integrated crawler
rubber
Arc shoe
37 on each side
37 on each side
Pitch: 154 mm
Pitch: 154 mm
Width: 330 mm
Width: 600 mm
17.2 (1751
17.2 11751
Gear type (SAR(2)-045)
Gear type (SAR(2)-045)
90.1
90.1
2-spool valve
2-spool valve Double-acting,
piston type
mm
100
100
Outside diameter of piston rod
mm
50
50
Piston stroke
mm
650
650
Cylinder
bore
Max. distance between
pins
mm
1,710
1,710
Min. distance between
pins
mm
1,060
1,060
mm
80
80
Outside diameter of piston rod
mm
45
45
Piston stroke
mm
595
595
Cylinder
0122
type
and up
Semi-double grouser
Type
Hydraulic
41184
bore
Max. distance between
pins
mm
1,880
1,880
Min. distance between
pins
mm
1,285
1,285
tank
Externally
mounted
control
valve
GENERAL
SPECIFICATIONS
model
Machine
Serial
No.
f
Link type
Single
shape of bucket edge
With teeth
(6)
type
With teeth
Bucket hinge pin height
mm
3,105
3,175
Dumping
mm
2,540
2,640
mm
(2,420)
(2,520)
mm
810
750
(Tip of teeth)
mm
(885)
(825)
Dumping reach Hinge pin min. position
mm
-
-
(Tip of teeth)
mm
-
-
Bucket tilt reverse angle (Bucket on ground)
deg
43
43
Bucket tilt forward angle (Bucket max. raise)
deg
50
50
(IO’ forward)
mm
260
185
(Tip of teeth)
mm
(310)
(235)
clearance
(Tip of teeth) Dumping
reach
Hinge
pin max.
l
position
l
Bucket digging
depth
(7)
GENERAL
SPECIFICATIONS
D37E-5 D37P-5A Machine Serial
model
No.
D37E-5
D37P-5A
3731 and up
3661 and up
z
Operating
.‘$
l
Bare tractor
kg
5,400
5,890
l
With
kg
6,490
7,020
m3
2.13
2.30
m
2.3
2.6
Gradeability
deg
30
30
Stability
deg
35
35
2.3
2.3
4.1
4.1
6.9
6.9
3
weight
dozer
Blade capacity Min. turning
radius
Reverse
1st
km/h
2.5
2.5
Reverse
2nd
km/h
4.5
4.5
Reverse
3nd
km/h
7.5
7.5
Bare tractor
kPa {kg/cm21
36.3 IO.371
21.6 IO.221
With
kPa Iko/cm2
44.1 IO.451
26.5 10.27)
2,995
3,035
3,950
3,940
1,790
2,250
2,415
2,875
mm
-
2,735
mm
2,675
2,695
mm
1,955
2,045
Track gauge
mm
1,450
1,650
Length
mm
2,185
2,185
mm
330
600
mm
315
380
dozer
To top of canopy To tip of exhaust To top of operator’s
Width
pipe compartment
of track on ground of track shoe (standard)
Min. ground clearance (to drain port of steering case)
0124
SPECIFICATIONS
GENERAL
I Machine Serial
model No.
I
D37E-5
D37P-5A
3731 and up
3661 and up S4D102-1
Name 4-cycle, water-cooled,
Type
in-line vertical type, direct injection, with turbocharger
mm
4 - 102 x 120
e {cc}
4.89 (4,890)
Rated horsepower
W/rpm IHP/rprr
59.612.500 {79.9/2,500}
Max. torque
lmhpm {kgmirpn
294/l ,400 {30/l ,400}
High idling
wm
2,625
Low idling
vm
800
No. of cylinders
- bore x stroke
Piston displacement
Min. fuel consumption Starting
ratio
I/kWh
217 1162)
{g/HI?-
24 V, 4.5 kW
motor
24 V, 25 A
Alternator
12 V, 70 Ah x 2
Battery
D-4 type
Radiator core type
I
Wet type, spring friction type
Damper Planetary
gear type, hydraulically
actuated,
lubrication
HYDROSHIFT transmission pump force feed type, forward Bevel gear shaft
Spiral bevel gear, splash lubrication Dry type, multiple
Steering
type
disc clutch, spring boosted,
clutch manually
Steering
3 speed, reverse 3 speed
brake
Final drive
operated,
Dry type, band type, PPC actuated, interconnected
with clutch
Spur gear type, l-stage reduction gear, splash type lubrication
Suspension Carrier roller (each side) Track roller (each side)
PPC actuated
6
6
SPECIFICATIONS
GENERAL
Machine
Serial
model
D37P-5A
D37E-5
No.
3731
and
Dry, assembly
Track shoe
MPa kg/cm
type
and
up
Dry, assembly
type
Single
Arc shoe
41 on each side
41 on each side
Pitch: 154 mm
Pitch: 154 mm
Width: Max. pressure
3661
up
400 mm
Width:
600 mm
17.2 {175}
17.2 (1751
Gear type (SAR(2)-045) Q/min
Main control
95.5
valve
3-spool
valve
Double-acting, Cylinder
bore
Outside diameter
of piston rod
Piston stroke
mm
90
90
mm
40
40
mm
393
398
distance
between
pins
mm
1,109
1,109
Min. distance
between
pins
mm
716
716
mm
90
90
mm
40
40
mm
145
145
pins
mm
613
613
pins
mm
468
468
mm
90
90
mm
40
40
mm
393
393
Max.
Cylinder
bore
Outside diameter
of piston rod
Piston stroke Max. distance Min. distance Cylinder
between between
bore
Outside diameter
of piston rod
Piston stroke distance
between
pins
mm
1,109
1,109
Min. distance
between
pins
mm
716
716
Max.
Hydraulic
piston type
tank
Externally
mounted
control
valve
GENERAL
SPECIFICATIONS
Machine Serial
model No.
Type
Blade support
%
z
0
-
method
D37E-5
D37 P-5A
3731 and up
3661 and up
Hydraulic type angle tiltdozer
Hydraulic type angle tiltdozer
Hydraulic type
Hydraulic type
cylinder
cylinder
Max. lifting height (from ground)
mm
865
935
Max. lowering depth (from ground)
mm
370
300
Max. tilt
mm
350
420
Angle of blade
deg
25
25
Blade cutting angle
deg
57
60
Blade width
mm
2,415
2,875
Blade height
mm
940
895
GENERAL
WEIGHT TABLE
WEIGHT TABLE D31E, P, PL, PLL-20 D3 1 P-20A This weight
Ah
table
is a guide
for use when
transporting
or handling
components. Unit:
Machine
model
D31E-20
D31P-20
D31P-20A
D31PL-20
C131PLL-20
No.
42001 42713
45001 47616
45001 47616
45001 47616
45001 47652
460
469
469
469
469
430
439
439
439
439
27
27
27
27
27
40
40
37
40
40
195
195
175
195
195
232
232
232
232
232
6
6
6
6
6
8
8
8
8
8
140
140
140
140
140
48
48
48
48
48
9
Serial Engine
and damper
l
Engine
l
Damper
assembly assembly
Fuel tank
assembly
HYDROSHIFT
Speed
Bevel
(with
valve
shaft
assembly
assembly
and inching
gear
fuel)
transmission
- Modulating l
assembly
assembly
Radiator
valve
assembly
and steering
clutch
l
Brake
9
9
9
9
l
Bevelgearshaft
9
9
9
9
9
l
Bevel
15
15
15
15
15
6
6
6
6
6
45
53
45
69
69
41
41
41
41
41
690
670
690
720
720
623
596
624
624
624
32
37
32
45
45
478
523
530
530
665
106
127
132
132
163
95
95
95
95
95
27
27
27
27
27
(each)
20
20
20
20
20
side)
890
1,340
1,340
1,610
1,800
106
132
107
134
134
case (each
Sprocket
(each
frame
l
Main
l
Sprocket
Track
l
Idler
frame
l
Carrier shoe
Cross
bar
(each
assembly
roller
Track
Ob38
shaft
(each
assembly
Track
side)
and steering
frame
l
side)
assembly
group
l
side)
assembly
drive
Track
(each
gear
PPC valve
Main
assembly
(each
assembly
Steering
Final
assembly
clutch
l
band
roller
(each
side)
side)
assembly
side) (each)
assembly
assembly
case
side)
(each
kg
(each
side)
% z 0
GENERAL
WEIGHT TABLE
Unit: kg Machine
Serial Hydraulic Hydaulic Blade
model
D31 E-20
D31 P-20
D31 P-201
D31 PL-20
No.
42001 42713
45001 47616
45001 47616
~ 45001 47616
tank assembly control
valve
lift cylinder
assembly
Blade tilt cylinder
assembly
Blade
angle
cylinder
(each side)
assembly
(each side)
Power angle and tiltdozer assembly
87
87
87
20
20
20
20
20
24
24
34
34
34
17
17
22
22
22
23
23
-
-
-
726
787 -
-
-
l
Blade
360
412
l
U-frame
261
261
Straight tiltdozer assembly % Z
l
Blade
l
Straight frame (each side)
l
Blade tilt cylinder
l
Tilt brace
45001 47652
87
87 assembly
I
D31 PLL-20
-
-
678
638
677
349
273
276
82
82
89
22
22
22
14
14
14
0
assembly
56
56
176
176
207
42
42
42
42
42
36
39
39
39
39
Hood
27
28
28
28
Loader frame
120
120
103
103
103
Operator’s seat assembly
21
11
11
11
11
Canopy assembly
50
50
50
50
50
Radiator Engine
guard underguard
Transmission
underguard
~
28
GENERAL
WEIGHT TABLE
D31S, Q-20
Machine
model
Serial Engine and damper
No.
assembly
D31 S-20
D31 Q-20
41001 - 41183
41001 - 41183
469
469
l
Engine assembly
439
439
l
Damper assembly
27
27
40
40
195
195
232
232
6
6
8
8
140
140
48
48
9
9
Radiator
assembly
Fuel tank assembly
(with fuel)
HYDROSHIFT transmission
assembly
l
Modulating
valve assembly
l
Speed and inching valve assembly
Bevel gear shaft and steering clutch assembly
clutch assembly
l
Steering
(each side)
l
Brake band assembly
l
Bevel gear shaft
9
9
l
Bevel gear
15
15
6
6
Final drive case (each side)
45
53
Sprocket
(each side)
41
41
Main frame assembly
680
680
612
612
32
37
478
478
(each side)
PPC valve assembly
l
Main frame and steering
l
Sprocket
case
shaft (each side)
Track group assembly
(each side)
l
Track frame (each side)
106
106
l
Idler assembly
95
95
l
Track roller assembly
27
27 *
(each)
20
20
(each side)
980
1,210
107
127
(each side)
- Carrier roller assembly Track shoe assembly Cross bar
Ol-&IO
(each)
GENERAL
WEIGHT TABLE
Unit: kg
Machine Serial Hydraulic
control
valve
lift cylinder
Bucket dump
No.
assembly
cylinder
(each side)
assembly
(each side)
- 41183
D31 Q-20
I
41001
- 41183
87
70
20
20
43
43
33
33
487
487
Bucket dump
lever
(Inside)
23
23
Bucket dump
lever
(Outside)
26
26
357
384
56
51
42
42
36
36
28
28
282
282
11
11
50
50
Bucket assembly Radiator Engine
0
41001
assembly
Lift arm assembly
% z
D31 S-20
tank assembly
Hydaulic Bucket
model
(with tooth)
guard underguard
Transmission
underguard
Hood Loader
frame
Operator’s Canopy
seat assembly
assembly
GENERAL
WEIGHT TABLE
D37E-5 D37P-5A
Unit: Machine
model
Serial Engine
and damper
l
Engine
l
Damper
assembly
l
Modulating
l
Speed
Steering
l
Brake
band
l
Bevel
gear
l
Bevel
gear
inching
valve
frame
l
Main
l
Sprocket
frame
Idler
l
Track
l
Carrier
(each
assembly roller
Track
shoe
Cross
bar
roller
assembly
195
232
232
I
6
15
6
6
45
53
41
41
660
670
596
596
32
37
523
663
127
197
95
95
27
27
(each)
20
20
side)
990
1,340
106
132
case
side)
side) (each)
(each
195
15
side)
assembly
40
9
(each
assembly
40
9
side)
(each
27
9
and steering
assembly
27
9
assembly
group
439
48
side)
side)
side)
(each
430
48
(each
side)
shaft
469
140
(each
assembly
I
frame
460
140
clutch
shaft
(each
- 3660
8
assembly
assembly
3001
8
and steering
case (each
Sprocket
l
assembly
D37P-5A
- 3730
6
assembly
drive
Track
assembly
assembly
clutch
PPC valve
fuel)
valve
shaft
l
l
(with
transmission
and
gear
Track
assembly
assembly
HYDROSHIFT
Main
3001
assembly
Fuel tank
Final
No.
assembly
Radiator
Bevel
D37E-5
kg
GENERAL
WEIGHT TABLE
Unit: kg Machine Serial Hydraulic Hydaulic
control
No.
3001 - 3730
valve assembly
Blade lift cylinder
assembly
Blade tilt cylinder
assembly
Blade pitch cylinder
(each side)
assembly
(each side)
assembly
Power angle and tiltdozer
assembly
I I
D37P-5A 3001 - 3660
70
70
20
20
24
24
18
18
19
19
19
19
787
I
787
l
Blade
412
412
l
U-frame
261
261
56
56
Engine underguard
42
42
Transmission
39
39
Hood
26
26
Loader frame
120
120
Operator’s
21
11
-
50
Radiator z
D37E-5
tank assembly
Blade angle cylinder
%
model
guard
0
underguard
seat assembly
Canopy assembly
01-.&43
GENERAL
WEIGHT TABLE
D31E, P, PL, PLL-20 D3 1 P-20A
Unit: kg Machine
Serial Engine
and damper
l
Engine
l
Damper
D31 P-20
D31 P-20A
D31 PL-20
131 PLL-20
No.
42714 and up
47617 and up
47617 and up
47617 and up
47653 and up
410
469
469
469
469
360
439
439
439
439
27
27
27
27
27
40
40
37
40
40
195
195
175
195
195
232
232
232
232
232
6
6
6
6
6
8
8
8
8
8
140
140
140
140
140
48
48
48
48
48
9
9
9
9
9
assembly
assembly assembly
Fuel tank
assembly
HYDROSHIFT l
Modulating
l
Speed
(with
gear
Steering
l
Brake
valve
shaft
assembly valve
assembly clutch
assembly
assembly
gear
assembly
and steering
clutch band
9 Bevel
fuel)
transmission
and inching
l
l
D31 E-20
assembly
Radiator
Bevel
model
(each
(each
side)
Final
9
9
9
9
9
15
15
15
15
6
6
6
6
6'
45
53
45
69
69
41
41
41
41
41
690
670
690
720
720
623
596
624
624
624
32
37
32
45
45
557
615
628
628
771
185
219
230
230
269
95
95
95
95
95
27
27
27
27
27
(each)
20
20
20
20
20
side)
890
1,340
1,340
1,610
1,800
106
132
107
134
134
assembly
drive
Sprocket Main
case (each (each
frame
l
Main
l
Sprocket
Track
group
l
Track
l
Idler
side)
side)
assembly
frame
and steering
shaft
(each
assembly
frame assembly
(each
(each
Track roller assembly
l
Carrier roller assembly shoe
Cross
bar
01544
assembly
side)
side)
l
Track
case
side)
(each
side) (each)
(each
side)
15
shaft
Bevel gear
PPC valve
assembly
% z 0
GENERAL
WEIGHT TABLE
Unit: kg Machine Serial Hydraulic
control
D31 P-20
D31 P-2OP
D31 PL-20
C131 PLL-20
No.
42714 and up
47617 and up
47617 and up
47617 and up
47653 and up
valve
assembly
lift cylinder
assembly
Blade tilt cylinder
assembly
Blade angle Power
cylinder
angle
(each side)
assembly
and tiltdozer
(each side)
assembly
87
87
87
87
87
25
25
20
20
20
24
24
34
34
34
17
17
22
22
22
23
23
-
-
-
-
-
-
726
787
l
Blade
360
412
l
U-frame
261
261
Straight l
% F
D31 E-20
tank assembly
Hydaulic Blade
model
tiltdozer
assembly
Blade
l
Straight
frame
(each side)
l
Blade tilt cylinder
l
Tilt brace
-
-
678
638
677
349
273
276
82
82
89
22
22
22
14
14
14
0
Radiator Engine
assembly
guard underguard
Transmission
underguard
Hood Loader
frame
Operator’s
seat assembly
Canopy, assembly
56
56
176
176
207
42
42
42
42
42
36
39
39
39
39
27
28
28
28
28
120
120
103
103
103
21
11
11
11
11
50
50
50
50
50
GENERAL
WEIGHT
TABLE
D31S, Q-20
Unit: kg Machine
model
Serial Engine and damper l
Engine assembly
l
Damper assembly
Radiator
No.
assembly
assembly
Fuel tank assembly
(with fuel)
HYDROSHIFT transmission l
Modulating
l
Speed and inching
assembly
valve assembly valve assembly
Bevel gear shaft and steering clutch assembly
clutch assembly (each side)
D3 1S-20
D31 Q-20
41184 and up
41184 and up
419
419
389
389
27
27
40
40
195
195
232
232
6
6
8
8
140
140
48
48
%
9
9
;;
l
Steering
l
Brake band assembly
l
Bevel gear shaft
9
9
l
Bevel gear
15
15
6
6
Final drive case (each side)
45
53
Sprocket
(each side)
41
41
Main frame assembly
680
680
612
612
32
37
557
557
185
185
95
95
27
27
(each)
20
20
(each side)
980
1,210
107
127
(each side)
PPC valve assembly
l
Main frame and steering
l
Sprocket
shaft (each side) (each side)
Track group assembly l
Track frame
l
Idler assembly
(each side) (each side)
l
Track roller assembly
l
Carrier roller assembly
Track shoe assembly Cross bar
01-&a
case
(each)
GENERAL
WEIGHT TABLE
Unit: kg Machine
model
Serial Hydraulic
No.
control
valve
lift cylinder
Bucket dump
assembly
assembly
cylinder
up
41184
and
87
70
20
20
43
43
33
33
487
487
lever
(Inside)
23
23
Bucket dump
lever
(Outside)
26
26
357
384
56
51
42
42
36
36
28
28
282
282
11
11
50
50
Radiator Engine
0
(each side)
and
D31 Q-20
Bucket dump
Bucket assembly
z
(each side)
assembly
Lift arm assembly
%
41184
tank assembly
Hydaulic Bucket
D31 S-20
(with tooth)
guard underguard
Transmission
underguard
Hood Loader
frame
Operator’s Canopy
seat assembly
assembly
up
GENERAL
WEIGHT
TABLE
D37E-5 D37P-5A
Unit: kg Machine
model
Serial Engine and damper
No.
assembly
D37E-5
D37P-5A
3731 and up
3661 and up
410
419
l
Engine assembly
380
389
l
Damper assembly
27
27
40
40
195
195
232
232
6
6
8
8
140
140
48
48
9
9
Radiator
assembly
Fuel tank assembly
(with fuel)
HYDROSHIFT transmission l
Modulating
l
Speed and inching
assembly
valve assembly valve assembly
Bevel gear shaft and steering clutch assembly
clutch assembly
l
Steering
(each side)
l
Brake band assembly
l
Bevel gear shaft
9
9
l
Bevel gear
15
15
6
6
Final drive case (each side)
45
53
Sprocket
41
4;
% v
(each side)
PPC valve assembly
(each side)
Main frame assembly
660
l
Main frame and steering
l
Sprocket
596
596
32
37
615
685
219
219
95
95
27
27
(each)
20
20
(each side)
990
1,340
106
132
shaft (each side)
Track group assembly
(each side)
l
Track frame (each side)
l
Idler assembly
l
Track roller assembly
l
Carrier roller assembly
(each side)
Track shoe assembly Cross bar
0128
case
(each)
;5
GENERAL
WEIGHT TABLE
Unit: kg
I model
Machine
Serial Hydraulic
No.
control
valve
assembly
lift cylinder
assembly
Blade tilt cylinder
assembly
Blade angle Blade
cylinder
pitch cylinder
Power
I
tank assembly
Hydaulic Blade
I
angle
(each side)
assembly
(each side)
assembly
and tiltdozer
assembly
D37E-5 3731
and
3661
and 70
20
20
24
24
18
18
19
19
19
19
787
787 412
Blade
412
l
U-frame
261 guard
up
D37P-5A
70
*
Radiator
I
I
261
56
56
42
42
39
39
26
26
120
120
21
11
-
50
%
c
Engine
underguard
z Transmission
underguard
Hood Loader
frame
Operator’s Canopy
seat assembly
assembly
up
LIST OF LUBRICANT
GENERAL
LIST OF LUBRICANT D31P-20 D31PL-20 D31PLL-20
AND WATER
AND WATER
Serial No.: 45001 - 47616 Serial No.: 45001 - 47616 Serial No.: 45001 - 47652
RESERVOIR
KIND OF FLUID
AMBIENT TEMPERATURE -22
-4
14
32
50
68
CAPACITY (.b?, 86
104T
Soecified
Refill
Engine oil pan
11
Damper case
0.7
Transmission
16
case
13
Transfer case (incl. bevel gear case) Steering
17
clutch case
30 Engine oil
Final drive case (each)
Hydraulic
(D31:
9.5)
system
(D3.l.: 9.5)
33
Idler (each)
0.15
Track roller (each)
0.15 0.115
Carrier roller (each)
Cooling
01-&50
118
Iiesel fue
Fuel tank
system
Coolant
Add antifreeze
-
-
GENERAL
LIST OF LUBRICANT
D31E-20 D31P-20A D31S, Q-20 D37E-5 D37P-5A
Serial Serial Serial Serial Serial
No.: No.: No.: No.: No.:
RESERVOIR
Engine
oil pan
Damper
case
Transmission
42001 45001 41001 3001 3001 -
AND WATER
- 42713 - 47616 - 41183 3730 3660
T
KIND OF FLUID
-. -.
AMBIENT TEMPERATURE
I
CAPACITY (e) Specified
~
Refill
13
11
case
Transfer case (incl. bevel gear case) Steering
clutch
case !ngine
% z 0
oil
Final drive case (each)
Hydraulic
system
Idler
(each)
Track
roller
Carrier
roller
(each) (each)
Fuel tank
Cooling
D3&:
Xesel fuel
system
Coolant
9dd antifreeze
9.5) ,,,I,,;,‘,:
9.5)
GENERAL
LIST OF LUBRICANT
D31P-20 D31PL-20 D31PLL-20
Serial No.: 47617 and up Serial No.: 47617 and up Serial No.: 47653 and up
RESERVOIR
KIND OF FLUID
-4
14
case
Transfer case (incl. bevel gear case)
50
36
104°F Af 1°C
CAPACITY (e, Specified
Final drive case (each)
Refill
14
1.5
1.5
16
13
17.5
17
30
30
(D31:
system
r
15.2
F
clutch case ingine oi
Hydraulic
32
c L=
Damper case Transmission
I
AMBIENT TEMPERATURE -22
Engine oil pan
Steering
AND WATER
9.5)
45
33
Idler (each)
0.15
0.15
Track roller (each)
0.15
0.15
0.115
0.115
Carrier roller (each)
Fuel tank
Iiesel fue
Cooling system
Coolant
og2
118
Add antifreeze
22
GENERAL
LIST OF LUBRICANT AND WATER
D31 E-20 D31P-20A D31S, Q-20 D37E-5 D37P-5A
Serial Serial Serial Serial Serial
No.: No.: No.: No.: No.:
RESERVOIR
42714 and up 47617 and up 41184 and up 3731 and up 3661 and up
T
KIND OF FLUID
AMBIENT TEMPERATURE
-22
-4
-
14
32
50
68
CAPACITY (8) 86
104"
Specified
Refill
Engine
oil pan
15.2
14
Damper
case
1.5
1.5
16
13
17.5
17
30
30
Transmission
case
Transfer case (incl. bevel gear case) Steering
clutch
case ingine oil
% z 0
Final drive case (each)
Hydraulic
system
Idler
(each)
Track
roller
Carrier
roller
(each)
system
Coolant
(D3&:
9.5)
33
0.15
0.15
0.15
liesel fuel
9.5)
49
(each)
Fuel tank
Cooling
D3lE,&:
118
GENERAL
FUEL, COOLANT
NOTE: (I) When fuel sulphur content is less than 0.5%, change oil in the oil pan every periodic maintenance hours described in this manual. Change oil according to the following table if fuel sulphur content is above 0.5%.
Fuel sulphur
content
Change interval of oil in engine oil pan
(2) When starting the engine in an atmospheric temperature of lower than O”C, be sure to use engine oil of SAEIOW, SAEIOW-30 and SAE15W-40, even though an atmospheric temperature goes up to 10°C more or less in the day time. (3) Use API classification CD as engine oil and if API classification CC, reduce the engine oil change interval to half. (4) There is no problem if single grade oil is mixed with multigrade oil (SAEIOW-30, 15W401, but be sure to add single grade oil that matches the temperature in the table on the left. Komatsu genuine oil which (5) We recommend has been specifically formulated and approved for use in engine and hydraulic work equipment applications. ASTM: SAE: API:
American Society of Testing and Material Society of Automotive Engineers American Petroleum Institute
Specified
Total amount of oil including oil for components and oil in piping. Refill capacity: Amount of oil needed to refill system during normal inspection and maintenance.
01-54 0
capacity:
AND
LUBRICANTS
10 STRUCTURE
AND FUNCTION
.............. .I.. ................. Power train hydraulic piping .......... Power train system
......
IO- 2
Power train skeleton
......
IO- 3
......
IO- 4
......
IO- 6
Power train hydraulic
circuit diagram
.
......... Damper and universal joint ........... Transmission control ................. Transmission pump .................. HYDROSHIFT transmission ........... Transmission control valve ........... Steering control ...................... Steering cylinder ..................... Power train hydraulic
Brake cylinder PPC valve
system
.......................
............................
Bevel gear shaft and steering
clutch
....................... Final drive ........................... Track frame ......................... Main frame and suspension .......... Hydraulic piping ..................... Hydraulic circuit diagram ............. Hydraulic circuit system .............. Hydraulic control ..................... Hydraulic tank and filter .............. Hydraulic control valve ............... Angle selector valve ................. Suction safety valve .................. Work equipment ..................... Electrical circuit diagram ............. Engine control ....................... Steering
Monitor Sensors
brake
system
......................
.............................
..
......
IO- 7
......
IO- 8
.......
IO- 9
......
IO-12
......
IO-14
......
1 o-22
......
1 O-28
......
1 O-30
......
1 o-31
......
1 O-32
......
1 O-38
......
1 O-40
......
1 O-42
......
1 o-43
......
1 o-45
......
1 o-47
......
1 O-50
......
1 o-51
......
1 O-56
......
1 o-57
......
1 O-58
......
1 O-62
......
1 O-65
......
1 O-66
......
1 O-69
......
1 O-70
......
1 o-71
......
1 O-72
STRUCTURE AND FUNCTION
POWER TRAIN SYSTEM
POWER TRAIN SYSTEM
SBOO2
.
OUTLINE . Motive
power
transmitted engine After power
generated
to damper
vibration from
is absorbed the
engine
changes
power
The power action
gear of transfer
(4) to the input
the
output
clutches gear
from
(9) is installed
shaft
the bevel
make
control
which
an appropriate is selected
shaft valve
passes
to bevel
--f damper
+ transmission
through
is then diverted
tions
by
gear shaft
(7) on the bevel
gear shaft.
from
the
pinion
radius
is varied is mounted from
drive of the
sprocket .
of the
bevel
travel.
machine
to
of steering periphery
brake
of the
(8)
brake
clutch
where +
is transmitted
speed gear
reduction
prior
to
to takes
rotating
(11).
The rotation
direc-
pinion
of the
clutch.
the steering
through
by oper-
to cut off power
The size of the turning
on the
flange
is changed
side
by means
of the steering
Power
the engine
and
of of
to the final
in order
at the
which drum .
clutch
lever
it is to be steered.
the final drive
at the rear of the mabevel
the steering
place from
ends
the flow
the direction
of the machine
ating
the output
into the left and right
of the
in-
pinion.
is transmitted
chine
speed clutch
The direction
which
by the make
change
at both
and break
machine. .
(6). In accordance
of the speed
which
means
the
at the top of the transmission
The power
gear
Steering the bevel
on the
damper,
from
transmission
to select
side the transmission .
joint
transmission in load,
is mounted
and break
by the
passes
universal
case is operated stage.
is fixed
(2) is
(IO), and are used to change
of HYDROSHIFT which
(3) which
engine
flywheel.
shaft through with
by diesel
169
of the sprocket
undercarriage,
(11) drives
causing
the
track
(12)
machine
to
STRUCTURE
AND
FUNCTION
POWER TRAIN
SKELETON
POWER TRAIN SKELETON D31 E-20 D31P-20A D31P, PL-20 D31PLL-20 D31S, Q-20 D37E-5 D37P-5A
Serial Serial Serial Serial Serial Serial Serial
No. No. No. No. No. No. No.
42001 45001 45001 45001 41001 3001 3001 -
-
42713 47616 47616 47653 41183 3730 3660
SAD02137
1.
Hydraulic
2.
Engine
3.
Damper
pump
(SAR(2)-036)
(6D95L-1)
7.
Bevel gear
8.
Steering
brake
9.
Steering
clutch
10. Final drive
4.
Universal
5.
Transmission
joint pump
11. Sprocket
6.
HYDROSHIFT
transmission
12. Track shoe
STRUCTURE AND FUNCTION
D31E-20 D31P-20A D31P. PL-20 D31PLL-20 D31S. Q-20 D37E-5 D37P-5A
-r
Serial Serial Serial Serial Serial Serial Serial
No. No. No. No. No. No. No.
POWER TRAIN SKELETON
42714 and up 47617 and up 47617 and up 47654 and up 41184 and up 3731 and up 3661 and up
-
I-
SAD02138
1.
Hydraulic
2.
Engine
3.
Damper
pump
(SAR(2)-045)
(S4D102-1) joint
7.
Bevel
8.
Steering
brake
9.
Steering
clutch
10. Final
gear
4.
Universal
5.
Transmission
pump
11. Sprocket
drive
6.
HYDROSHIFT
transmission
12. Track
shoe
POWER TRAIN HYDRAULIC PIPING D3 1 E-20 D31 P-20A D31P, PL, PLL-20 D31S, Q-20 D37E-5 D37P-5A
Serial Serial Serial Serial Serial Serial
No. No. No. No. No. No.
42001 45001 45001 41001 3001 3001 -
-
42198 45784 45784 41054 3234 3152
114FO2002
1. Oil cooler
7. R.H. steering
2. Transmission
pump
3. Oil cooler bypass valve 4. Transmission
cylinder
8. R.H. brake cylinder 9. L.H. brake cylinder
modulating
valve
10. L.H. steering
5. Check valve
cylinder
11. PPC valve
6. Tansmission
case
12. Oil filter
OUTLINE l
Oil in transmission (2) installed modulating
case (6) is sucked
to the transmission. valve
(4). pushes
and is sent to PPC valve .
PPC valve to
steering
levers,
cylinder
the
(7)
to
flow
of
the
of the left
oil
and
acright
The modulating
valve
cuit to specified
pressure.
relief
valve
is then .
passes
sent
1o-4 0
valve
in
circuit.
It
the
circuit
circuit
prevents
bypass (I),
in the cirby the main
valve
where
(3), and
it is cooled
valve
the
the oil
transmission
from
lubrica-
gear
oil
disengaged,
so it becomes
in
the
the
hytrans-
back.
is shifted
acts to make the pressure
(0 kg/cm*),
the
when
in the circuit
impossible
the
modulating 0 Pa
to disengage
the clutch. When two
It sends the oil directly to the
valve
between
and the steering
is
acts to protect
modulating
is
hydraulic
clutch
The oil cooler the
draulic
valve
steering
through
bypass
check
transmission
if the
Oil relieved
press-
ure.
circuit from flowing
sets the pressure
circuit
specified
words,
to oil cooler
damage.
of the oil cooler
to go above
In other
steering
the transmission.
from
clogging
pressure
mission hydraulic
the
before being sent to lubricate cooler
when
the
it to one of left or right
clutch. l
circuit
causes
disengage
and sends (IO)
(5),
tion
The
the
operation
or
open check valve
(11).
(11) switches
cording
up by pump
It passes through
this
circuits
circuit
high,
the steering
happens,
the check
valve
and keeps the pressure so it remains clutch.
possible
shuts
off the
in the steering to
disengage
6
Serial Serial Serial Serial Serial Serial
D31E-20 D31 P-20A D31P, PL, PLL-20 D31S, Q-20 D37E-5 D37P-5A
No. No. No. No. No. No.
42199 and up 45785 and up 45785 and up 41055 and up 3235 and up 3153 and up
0
1. Oil cooler
7. R.H. steering
2. Transmission
pump
cylinder
8. R.H. brake cylinder
3. Oil cooler bypass valve 4. Transmission
SBD01175
9. L.H. brake cylinder
modulating
valve
10. L.H. steering
5. Check valve
cylinder
11. PPC valve
6. Tansmission
case
12. Oil filter
OUTLINE l
Oil in transmission (2) installed modulating
case (6) is sucked
to the transmission. valve
(4), pushes
open
check valve
PPC valve
(11) switches
cording
to
steering
levers,
cylinder
the
(7)
operation
of
(IO)
to
the
of the left
oil
and
acright
The modulating
valve
cuit to specified
pressure.
relief
valve
is then l
passes
sent
valve
circuit.
It
the
circuit
circuit
prevents
the
Oil relieved bypass (I),
in the cirby the main
valve
where
(3), and
it is cooled
valve
It sends to the
the oil from
lubrica-
gear
disengaged,
so it becomes
in
the
the
hy-
trans-
back.
is shifted
acts to make the pressure
(0 kg/cm2),
the
when
in the circuit
impossible
the
modulating 0 Pa
to disengage
the clutch. When
this
two circuits
the oil directly transmission
valve
between
oil
is
sets the pressure
press-
and the steering
clutch
acts to protect
modulating
in
steering
The oil cooler the
is
hydraulic
if the
through
bypass
draulic
valve
circuit from flowing
to oil cooler
damage.
check
transmission
words,
the transmission.
from
The
mission hydraulic
steering
circuit
specified
In other
the
before being sent to lubricate cooler
of the oil cooler
to go above
it to one of left or right
clutch. l
clogging
pressure
disengage
and sends
or
flow
when
the
ure.
.
the
circuit
causes
(5),
and is sent to PPC valve (11). l
tion
up by pump
It passes through
circuit
high,
the steering
happens,
the check
valve
and keeps the pressure so it remains clutch.
possible
shuts
off the
in the steering to
disengage
STRUCTURE
POWER TRAIN
AND FUNCTION
POWER TRAIN HYDRAULIC
HYDRAULIC
CIRCUIT
DIAGRAM
CIRCUIT DIAGRAM
/iiC
$$-q PI
P2 P
/
P3
L
P4
21
.
I!
c
22
18
ti
)(
II
L-.
-
I
.
1 I / I
I-
I
I
!_
SAD02168
1. Transmission
case
16. Transmission
2. Transmission
pump
17. Reverse
3. Modulating Set pressure:
6.
2.1 +~~2sMPa {21.5’~kg/cm2}
lubrication
19. Oil filter 20.
PPC valve 20A.
valve
1st clutch
7. 2nd clutch
Brake valve
20B.
Steering
20C.
Oil filter
8. 3rd clutch
21.
Right steering
Inching
22.
Left steering
9.
lubrication
clutch
18. Check valve
valve
4. Quick return valve 5. Speed
valve
valve cylinder cylinder
valve
23.
Right brake cylinder
11. Forward
clutch
24.
Left brake cylinder
12. Reverse
clutch PI.
Main
IO.
r
Direction
13. Oil cooler 14. Oil cooler
Set pressure: 15. Transmission Set pressure:
0.98 MPa {IO kg/cm*} lubrication
relief pressure
P4. Inching
bypass valve valve
0.29 MPa 13 kg/cm*}
valve
pickup port
pressure
pickup port
POWER TRAIN HYDRAULIC
SYSTEM
(Engine at low idling, steering and directional lever at neutral)
8
-mm r 3rd
I
It
2nd
I
SBDOI 176
DAMPER
AND
UNIVERSAL
JOINT
Il3FI8008
OUTLINE 1. 2. 3. 4. 5. 6. 7. 8. 9.
1 O-8
Output shaft Flywheel Damper Oil filler plug Cover Output coupling Universal joint Transmission input coupling Oil level plug
l
l
The damper acts as a cushion to prevent the vibration of the engine from being transmitted directly to the transmission. The power from the engine is transmitted to damper (3) through flywheel (2). The power is absorbed the engine vibration by damper (31, and is transmitted to shaft (1) and universal joint (7). and then is transmitted to the transmission.
TRANSMISSION
CONTROL
D3 1 E-20 D3 1 P-20A D3 1 P-20
Serial No. 42001 - 42086 Serial No. 45001 - 45420 Serial No. 45001 - 45420
D31PL, PLL-20 D31 S, Q-20
Serial No. 45001 - 45609 Serial No. 41001 - 41025
D37E-5
Serial No. 3001 - 3085
D37P-5A
Serial No. 3001 - 3048
*
0
( /
I 1.
Gear shift lever
2.
Steering
3.
Lock lever
4.
Speed, directional,
5.
Inching pedal
SBDDt177
OUTLINE
and directional
lever
l
inching valve assembly
Gear
shift
lever
(2) in the
connected tional,
lever
(I)
with
and
each
inching
the steering
and
steering
oberator’s spool
valve
and
of
the
inching valve spool in the same way.
pedal
(5) is also
0:
Neutral
0:
Reverse
0:
1st
ated,
0:
2nd
when
gear
0:
3rd
valve
spool
0:
Free
2 clutches
8:
Lock
the machine travels.
0:
Inching
When
inching
,pedal
valve
spool
is
steering the
reverse or fully
of
case.
Inching
When
direc-
(4) on top
Lever, pedal position
l
are inter-
speed,
assembly
0:
Forward
directional
compartment
and
directional
directional shift
valve
lever
is actuated inside
clutch
lever
spool
with
the
at the same time.
the
and
the
A set of
the
and
inching
forward
transmission stop.
or
is partially
to make fine adjustment
travel speed or to make the machine
and speed
is engaged
(5) is operated,
actuated,
the
(2) is oper-
is actuated,
(1) is operated,
the transmission
inside
disengaged
interconnected
of the
SAFETY MECHANISM
WHEN SHIFTING TRANSMISSION
P I I4FO.2006
OUTLINE l
This
mechanism
ensures
transmission
by using
the
from
machine
safety
and
a link motion
starting
in 3rd
protects that
gear
1.
Steering
2.
Gear shift lever
and directional
3.
Intermediate
4.
Rod
5.
Lever
lever
lever
the
prevents either
for-
ward or in reverse. l
Lever
(5) is fixed
lever
(5) and rod
point
B.
to the
bracket
(4) are joined
Rod (4) and intermediate
at point with
lever
C, and
a pin at free
(3) are joined
with
a pin at point A. l
At the boss
portion
of intermediate
gear shift lever (2), the notches
lever
(3) and
are each meshed.
OPERATION When steering The gear shift
and directional lever will
lever is at N;
enter
1st or 2nd position,
but will not enter 3rd position. When
steering
and
directional
lever
points A, B, and C are in a straight When
gear shift
lever
so if it is attempted straight not
3rd
line.
move,
vent
gear
lever
to move
position, Because
shift
lever
faces
(3) are in contact, gear
shift
lever
(2)
A, B, and C are in a
points of
and the force
I 14FO2007
line.
(2) is at 2nd position,
D and E of intermediate to the
(1) is at N,
L
this,
the
moment
acts on point
(2)
from
being
does
C to preoperated.
(Point B is at the dead point.) When
gear shift
lever
(2) is moved
tion to 1st position,
there
F and
G,
operation
moving
intermediate
10-10
so
the
from
2nd posi-
is clearance
lever (3).
is
“a” at faces possible without
3’
I 14FO2008
2.
When steering
and directional
The gear shift
lever
lever is at F or R;
can be moved
to Ist,
2nd or
3rd positions. l
When
gear shift
directional mediate
lever
arrow.
lever
lever
(3) rotates
Clearance
at the meshing lever -
(2) is at 2nd, if steering
(1) are operated
(2) can
“b”
in the
is formed
portion
direction in both
of the boss,
be operated
and
to F or R, inter-
in both
of the
directions
so gear
shift
directions
(1st
-3
3rd).
1
I
I 14F0200E
3rd
I14F02010
3.
When
gear shift
directional
lever
is at 3rd,
The gear shift lever is shifted .
When
gear
portion
(-
In this
lever
lever
condition, and
the N position
directional
points
the direction portion
boss
shift lever (2) is returned
direc-
R) or R + N
lever
(1)
passes
A, B, and C come
of the arrow, of the
in the
when it is shifted.
intermediate
and
meshing
and
F + N (-
straight
line,
the
shown
if steering
At the N position,
ing
and
down to 2nd.
(2) is at 3rd,
(1) is operated
F), steering
through l
shift
of the boss is at the position
diagram. tional
and steering
lever is moved to N;
lever
into a
(3) moves
in
so face D at the meshpushes
face
E, and
gear
I
I
B
Il4FO201
to 2nd position. 2nd
3rd \
Il4FO2Oli
I
STRUCTURE
AND
D31E-20 D31P-20A D3 1 P-20 D31 PL-20 D31PLL-20 D31S, Q-20 D37E-5 D37P-5A
Serial Serial Serial Serial Serial Serial Serial Serial
TRANSMISSION
FUNCTION
No. No. No. No. No. No. No. No.
42087 45421 45421 45610 45610 41026 3086 3049 -
1. 2.
Gear shift lever Steering and directional
3.
Lock lever
4.
Speed, directional,
5.
Inching pedal
-
42713 47616 47616 47616 47653 41183 3730 3660
OUTLINE lever
inching valve assembly
Gear
shift
lever
(2) in the
lever
connected tional,
(1) and
and
steering
oyjerator’s
with
each
inching
the steering
spool
valve
and
of the
assembly
Inching
inching valve spool in the same way.
pedal
0: 0:
Neutral Reverse
When
0:
1st
ated,
(5) is also
0:
2nd
when
gear
@:
3rd
valve
spool
0:
Free
2 clutches
steering
and
shift
valve
lever
is actuated inside
interconnected
directional
directional
spool
the machine
0:
When
inching
,pedal
valve
spool
is
lever
with
the
at the same time.
the
and speed
A set of
is engaged
and
travels.
clutch
(5) is operated,
actuated,
inside
disengaged
the
and
the
the
inching
forward
transmission
or
is partially
to make fine adjustment
travel speed or to make the machine stop.
lo-~‘-’
of
(2) is oper-
is actuated,
(1) is operated,
the transmission
@I: Lock
or fully
direc-
case.
Forward
reverse
are inter-
speed,
(4) on top
Lever, pedal position
the
directional
compartment
0:
Inching
CONTROL
of the
STRUCTURE
AND FUNCTION
D31E-20 D31P-20A D31P, PL-20 D31PLL-20 D31S, Q-20 D37E-5 D37P-5A
Serial Serial Serial Serial Serial Serial Serial
No. No. No. No. No. No. No.
1. 2.
Steering, directional, Lock lever
3.
Speed,
4.
Inching
5.
Steering
directional,
42714 47617 47617 47654 42184 3731 3661
TRANSMISSION
and up and up and up and up and up and up and up
gear shift inching
valve
lever
OUTLINE . Steering,
assembly
pedal PPC valve
Lever, pedal
CONTROL
each spool
of the speed,
assembly pedal
(4) is also
inching
valve
spool
Neutral Forward
0:
Reverse
0:
Swing
left
speed
0:
Swing
right
set of 2 clutches
When
steering,
operated,
lever
directional,
(1) in the with
and inching
interconnected
in the same
directional,
the
valve
shift
is interconnected
(3) on top of the steering
Inching 0: 0:
.
gear
compartment
valve
position
directional,
operator’s
gear
directional
spool
is actuated inside
0:
1st
gaged
and the machine
Q):
2nd
When
inching
@:
3rd
valve
spool
0:
Free
verse
clutch
@:
Lock
or fully
0:
Inching
the travel
pedal inside
disengaged
the
the
way. shift
lever
spool
(1) is
and
the
at the same time.
the transmission
A
is en-
travels.
(4) is operated,
is actuated,
speed
valve
case. with
and
the
transmission
to make
or to make
fine
the
forward
inching or re-
is partially adjustment
the machine
of
stop.
’O-g -*
TRANSMISSION
PUMP
% 6 A-A
Il3FI8012
1. 2. 3. 4. 5. 6. 7. A. B.
10-12
Transmission input coupling Transmission input shaft Cover Drive gear Gear case Bracket Driven gear From transmission case To transmission control valve
OUTLINE l The transmission pump is assembled to the transmission input shaft. l The oil in the transmission case passes through the strainer, is sucked in at port A and discharged from port B. It then flows to the transmission control valve and the steering control valve.
HYDROSHIFT
TRANSMISSION
\
I
\
A-A
I13F18009
A. 6. C. D. E. F.
10-14
To 1 st speed clutch To forward clutch To reverse clutch To 2nd speed clutch To 3rd speed clutch From modulation valve
1. 2. 3. 4. 5. 6. 7. 8.
Input coupling Sleeve Cover Transmission pump Transmission case Transfer case Breather Oil strainer
POWER
FIRST
TRAIN
OF TRANSMISSION
FORWARD
SPEED
FI
No.2 and No.5 clutches
engaged
and No.2
1318007
ring gear
fixed, No.4 carrier and No.5 ring gear are engaged. With
No.2
and
No.5
clutches
engaged,
gear (16) is fixed and No.4 carrier gear
(26)
are engaged.
fixed,
the
No.2,
3
through 3 carrier
rotation carrier
(41)
input shaft (411, then,
input shaft (9).
When
of the with
No.2
engine
No.2
ring
(39) and No.5 ring ring gear (16) is transmitted
reduced
turning
is to
speed
(9) and No.2 sun gear (15). No.2, rotates
in the same direction
as
Since
No.4
engaged, (391,
carrier
(39)
and No.5
sun gear (20).
No.5
ring gear
(38) are all engaged The rotation ted to output
ring gear
ring gear
(26)
(22).
and No.5
(26)
No.4
are
carrier
piston
housing
as a unit.
of No.2, shaft
3 carrier
(27)
(41)
is then transmit-
in the same direction
and at
the same speed. The
rotation
of output
shaft
bevel pinion (33) with reduced tranfer
(27)
drive gear (32) and trasfer
Bevel pinion
(33)
then rotates
is tramsitted
to
turning speed through driven gear (34).
in the opposite
direc-
tion to output shaft (27).
10-17
SECOND FORWARD SPEED Nn!i
ii
22
24
27
i4
32
3’3
FI
1318008
No.2 and No.4 clutches engaged and No.2 and No.4 ring gears fixed. With No.2 and No.4 clutches engaged, No.2 and No.4 ring gears (I 6),and (24) are fixed. When No.2 ring gear (I 6) is fixed, the rotation of the engine is transmitted to No.2, 3 carrier (41) with reduced turning speed and in the same direction as in the case of first forward speed.
lo-18
Sine No.4 ring gear (24) is fixed, the rotation of No.2, 3 carrier (41) is transmitted to output shaft (27) at an increased turning speed through No.3 ring gear (22) and No.4 carrier (391, and No.4 sun gear (25) in that order. (Besides, the rotation is transmitted from No.3 sun gear (20) to output shaft (271.) Output shaft (27) rotates in the same direction as input shaft (9). The rotation of output shaft (27) is transmitted to bevel pinion (33) with reduced turning speed through transfer drive gear (32) and transfer driven gear (34). Bevel pinion (33) then rotates in the opposite direction to output shaft (27).
THIRD FORWARD
12 \
9 \
SPEED
14 \
Nod' No.2 F
22
16 No.3 1
3rd
No.4 2nd
No.5 1st
2'5
24
/
3'9
/
2%
3‘8
3'4 3'3 FI
No.2 and No.3 clutches
engaged
and No.2
1318009
and No.3
ring gears fixed. With
No.2
and
No.3
clutches
engaged,
No.2
and
No.3 ring gears (I 6) and (22) are fixed. When engine duced
No.2 ring gear (16) is transmitted turning
speed
is fixed, the rotation
to No.2,
3 carrier
(41)
and in the same direction
the case of first forward
speed.
of the
with reas in
Since
No.3
No.2,
3 carrier
(27)
ring gear (41)
at an increased
(22)
is fixed,
is transmitted turning
speed
the
rotation
to output thorgh
of
shaft
No.3
sun
gear (20) in that order. Output
shaft
(27)
rotates
in the same
direction
as
is transmitted
to
input shaft (9). The
rotation
of output
shaft
bevel pinion (33) with reduced transfer
(27)
turning speed through
drive gear (32) and transfer
Bevel pinion (33)
then rotates
driven gear (34).
in the opposite
direc-
tion to output shaft (27).
10-19
FIRST REVERSE SPEED
i
i
i
39
25 No.1
and No.5
clutches
engaged
and No.1
38
26
33
34
FI
1318010
ring gear
fixed, No.4 carrier and No.5 ring gear are engaged. With
No.1
and
No.5
clutches
engaged,
gear (I 2) is fixed and No.4 carrier gear
(26)
fixed,
are engaged.
No.1
carrier
When
(49)
No.1
meshed
No.1
(39) and No.5
ring
Since
ring
(411,
ring gear (I 2) is
with
No.1
ring gear
(I 2) is also fixed. The rotation (14)
through
in the speed.
input shaft direction
is transmitted (9) and No.1
rotation
and
to ring gear
speed.
I)
Output
sun gear (1
at a reduced
turning
(I
rotation
I) is meshed
No.2,
3 carrier
to No.2,
3 carrier
of No.2,
3 carrier
(41)
is transmitted
to
shaft
(27)
in the same way as in first forward
shaft
(27)
rotates
in the opposite
direction
to
input shaft (9). The
rotation
of output
shaft
bevel pinion (33) with reduced transfer
(27)
then rotates
tion to output shaft (27).
is transmitted
to
turning speed through
drive gear (32) and transfer
Bevel pinion (33)
1O-20
with
is transmitted
(41). The
output
of the engine
opposite
ring gear the
driven gear (34).
in the opposite
direc-
TRANSMISSION
CONTROL
VALVE
P4 \
114FO2016
A. B. C. PI P4
1o-22
From transmission pump To steering circuit To oil cooler Plug for modulating valve
Plug for inching valve pressure
1. Valve body
2. 3. 4. 5.
Detent Plug F-R spool Speed spool
6. Plug
7. 8. 9. 10. 1 1. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30.
\
5
A-A
B-B
Piston Spring Piston Inching valve Spring Piston Spring Sleeve Cover Inching valve spool Cover Stopper Load piston Valve body Spring Spring Modulating valve Piston Spring Piston Stopper Quick return valve Stopper Cover
31. Detent A. From transmission pump
17 18 19 20 21 22 c 23 24 25 26
27 31
D-D
114FO2017
1 O-23
MODULATING
VALVE
OUTLINE The modulating valve consists of a modulating relief valve and a quick return valve, and acts to modulates the pressure. When the gear shift lever is operated to shift gear, the clutch is pushed into close contact by the piston. However, if high pressure is suddenly applied, the piston will suddenly engage the clutch. This will make the machine suddenly start, and it will receive an excessive shock. To prevent this, the modulating valve is installed. When the gear shift lever is operated to shift gear, the pressure on the piston gradually rises to the set pressure and the clutch is engaged smoothly. This allows the machine to start without any shock, thereby improving the durability of the power train and at the same time providing a comfortable ride for the operator. The figure on the right shows the relationship between the time and the increase in the hydraulic pressure of the modulating valve. For example, when the gear is shifted from Fl to F2, the oil from the pump passes through the speed valve spool, flows to the second clutch and fills the circuit up to the clutch piston port. The time taken for the circuit to be filled up to the clutch piston port is called the “filling time”, and the oil pressure during this time is 0 kg/cm2. When the circuit up to the clutch piston port is filled with oil, the oil pressure starts to rise. The time taken for the pressure to rise to the set pressure is called the “build-up time”. The filling time and build-up time toghther are called the “modulating time”.
1 O-24
Modulating
l
MPa (kg/en?)
graph
Modulating
iA-
B
:
time
Filling time
-
,
C
:
Build-up time D
2 2 : h 5
0 0
>
(sec.)
Time 114FO2018
19 21 22
OPERATION 1.
While
23
To oil cooler
?S
traveling
(Range A and D in Fig. 114FO2018) The
oil from
the transmission
A and chamber
B.
The
through
oil passes
chamber valve The
F through
orifice the
enters
port
b and goes
from
speed
valve
and
to fill the two sets of clutch
piston
ports.
pressure
action
pump
in this
circuit
of modulating
valve
When
the
inside
higher,
the modulating
is always
F-R
set
by the
(23) to specified
press-
To speed valve
‘a
ure.
opens
pressure
the
passage
so the oil from If the
of leakage the
inside valve
the clutch
piston
or valve,
moves
the
the passage
between
so the
oil from
pump
into the circuit 2.
because
Immediately (Range
ZJ *
When
6
from the
after
the
gear
clutch
after
this
cause
to
the port
this
moved
port
19 21 22
To oil cooler
23
?S
A
port. lever
is moved,
the circuit
is opened
a difference port
right.
A and
oil
in pressure
is
chamber
by orifice
A, quick This
port of and
port. F be-
b. Because
return
connects
G and relieves
valve
of (28)
chamber
the back
D
pressure F 10306028
(19).
happens,
to the right
(22),
to the piston
shifting
piston
at port
on load piston When
lever
the oil is restricted
and drain
and
gear
between
pressure
moves
from
gear shift
pump
happens,
generated the
shifting
shift
to the clutch
When
piston
This
B and E,
:9 F I0306027
B in Fig. 114FO2018)
the transmission
flows
chambers all flows
to the clutch
right.
b
From pump
E.
drops
to
I
B and E,
to chamber
circuit
closes
the
becomes
to the left. It
chambers
is relieved
the
of oil from
modulating
circuit
moves
between
the pump
pressure
the
valve
modulating
valve
by the tension
and load piston
(19)
(23)
of springs
is returned
is
(21) to the
left.
To speed valve
2’8 pump
29 F I0306029
1o-25
3.
While clutch pressure is rising (Range C in Fig. F10406016) When the oil sent under pressure from the pump fills the circuit from port A to the clutch piston port, the oil pressure starts to rise. When this happens, the difference in pressure on both sides of orifice b is removed. Quick return valve (28) moves to the left and the passage between chamber D and drain port G is closed. The oil flows through orifice a to chamber C and pushes piston (26). The reaction to this makes modulating valve (23) compress springs (21) and (22) and move to the left. This opens the passage from chamber B to chamber E. At the same time, the oil passing from orifice c through the chamber in the center of quick return valve (28) then passes through orifice d and enters chamber D. The oil becomes the back pressure of load piston (I 9), compresses springs (21) and (22) and move the load piston to the right to the passage between close chambers B and E. This operation is repeated continuously to increase the load on springs (21) and (22). In this way, the hydraulic pressure inside the circuit gradually rises and finally load piston (19) comes into contact with the valve body and cannot move any further. When this happens, modulating valve (23) stops in a position where the passage between chambers B and E is open, and the rise in pressure is
19
21
22
Tooil,cooler
23
26
To speed valve
29
Pump
F I 0306030
19 21 22
To oil,cooler
23
26
To speed valve
.a
completed. The
hydraulic
pressure
pressure.
The
oil
chamber
E flows
at this
relieved from
from
chamber
point
is specified
chamber
E into
pump
B to the
oil F
cooler circuit. 21
22
Tooil
cooler
23
I 030603 26
F 10306032
1 O-26
I
OUTLINE l
The inching valve is in the circuit between the speed valve and F-R valve. The amount that the inching pedal is operated adjusts the amount of oil (oil pressure) sent from the speed valve to the F-R valve. This changes the contact force of the FORWARD or REVERSE clutches to partially disengage the clutches and allow fine control of the travel speed; or it completely disengages the clutches to make it possible to stop the machine.
OPERATION 1.
Inching pedal not operated Spool (16) is interconnected with the inching pedal, so when the inching pedal is not being operated, it is at the end of its stroke on the right. As a result, valve (10) is pushed to the right by sleeve (14) together with the spool. The oil sent under pressure from the pump passes through the modulating valve and speed valve and enters ports A and B. It then passes through the F-R valve and flows to the FORWARD or REVERSE clutch piston port. The oil passing through orifice a and entering chamber C becomes the force trying to move valve (10) to the left because of the reaction pushing piston (7). However, valve (IO) is in contact with sleeve (141, so it cannot move to the left. Therefore, passage b between port A and B is kept fully open. As a result, the oil from the speed valve gradually increases in pressure because of the action of the modulating valve. It enters clutch piston port and fully engages the clutch.
valve
To F-R
/if
b
Cc
Fromspeedvalve F I0306033
1 O-27
2.
Fine operation of inching pedal When the inching pedal is partially depressed, spool (16) moves to the left by an amount which corresponds to the amount the pedal is depressed. When this happens, sleeve (14) moves out of contact with valve (10) and determines the tension of spring (1 1). In this case, if the oil from the speed valve fills the circuit to the clutch piston port, the oil pressure gradually rises. When this happens, the oil pressure in chamber C gradually moves valve (I 0) to the left to a position where it is in balance with the tension of spring (11). Passage b is restricted, so the pressure in the circuit from port B to the clutch port does not rise any more. As a result, the clutch is partially disengaged and the machine travel speed drops.
To F-R valve
A
~
t From speed valve F I 0306034
To F-R valve
From speed valve F 10306035
3.
Inching pedal fully depressed When the inching pedal is fully depressed, spool (16) moves to the left from the condition in Step 2, and the tension of spring (11) becomes the minimum. In this condition, the oil pressure in the circuit from port B to the clutch piston port rises slightly, and valve (10) is moved by the oil pressure in chamber C to close passage b. Therefore, the clutch is disengaged and the machine stops. If the oil pressure in the circuit beyond B drops because of oil leakage in the circuit beyond port B, the balance between the hydraulic pressure in chamber C and the tension of spring (1 1) is lost. The tension of spring (I 1) then moves valve (10) back to the right to open passage b and supply oil. This operation is repeated to maintain the hydraulic pressure in the circuit beyond port B to a fixed level.
1 O-28
To F-R valve
From speed valve F I0306036
D3 1 E-20 D3 1 P-20A D31P, PL, PLL-20 D31S, Q-20 D37E-5 D37P-5A
Serial Serial Serial Serial Serial Serial
No. No. No. No. No. No.
42001 45001 45001 41001 3001 3001 -
-
42198 45784 45784 41054 3234 3152
114FO2019
1. Brake lock lever
OUTLINE
2. Brake pedal
l
3.. Right brake
Steering of the
and
directional
operator’s
4. Right brake cylinder
with
5. Right steering
actuate the steering
6. Steering
cylinder
and directional
lever
PPC valve
Brake
7. PPC valve
pedal
lever
(6) on the
compartment
left side
is interconnected
(7), and uses hydraulic
pressure
to
and brakes.
(2) is interconnected
only
with
the
brake lever. .
8. Left brake 9. Left steering
cylinder
If
the
slightly
10. Left brake cylidner
tially
steering
and
to the
left, the
disengaged
directional
lever
left steering
and the
machine
is
clutch turns
moved is par-
slowly
to
the left. Lever, pedal positions
.
If the steering
@I: Left steering
clutch disengaged
to the
0:
Left steering
brake applied
disengaged,
0:
Right steering
clutch disengaged
0:
Right steering
brake applied
0:
Steering
0:
Brake locked
10-29-l 0
brake applied
left,
the
and directional left
lever
is moved
fully
steering
clutch
is completely
and left steering
brake
(8) is also ap-
plied to make the machine turn sharply to the left.
STRUCTURE
AND
D31 E-20 D31P-20A D31P, PL-20 D31PLL-20 D31S, Q-20 D37E-5 D37 P-5A
Serial Serial Serial Serial Serial Serial Serial
STEERING
FUNCTION
No. No. No. No. No. No. No.
42199 45785 45785 45785 41055 3235 3153 -
-
42713 47616 47616 47653 41183 3730 3660
1. Brake
lock lever
OUTLINE
2.
Brake
pedal
.
3.
Right
brake
4.
Right
brake
5. Right
6. Steering
with
cylinder
PPC valve
8.
Left brake
9.
Left steering
lever
.
10. Left brake
and directional
Brake
pedal lever.
If the slightly
cylinder
tially
cylinder
to the .
Lever, pedal positions 0: Neutral
steering
is interconnected
uses
hydraulic
and
disengaged
pressure
and brakes. only
directional
lever
to the left, the left steering and the
with
is moved
clutch
machine
the
turns
is parslowly
left. and directional
left, the
0:
Left steering
clutch
disengaged
disengaged,
0:
Left steering
brake
applied
applied
0:
Right
steering
clutch
disengaged
0:
Right
steering
brake
applied
8:
Steering
0:
Brake
brake
(6) on the left side
(2) is interconnected
If the steering to the
(7), and
the steering
brake
lever
compartment
PPC valve
to actuate
cylinder
and directional
7.
Steering
of the operator’s
steering
CONTROL
left steering
and
left
lever is moved clutch
steering
to make the machine
brake turn
fully
is completely (8) is also
sharply
to the
left.
applied
locked
’O-i9-*
STRUCTURE
AND
D3 1 E-20 D31P-20A D31P, PL-20 D31PLL-20 D31S, Q-20 D37E-5 D37P-5A
Serial Serial Serial Serial Serial Serial Serial
FUNCTION
No. No. No. No. No. No. No.
STEERING
CONTROL
42714 and up 47617 and up 47617 and up 47654 and up 41184 and up 3731 and up 3661 and up
SE002140
1. Brake
lock lever
2.
Brake
pedal
OUTLINE . Steering,
3.
Right
brake
left side
4. Right
brake
5. Right
steering
6. Steering,
connected
cylinder
directional,
7.
PPC valve
8.
Left brake
9.
Left steering
10.
cylinder
pressure gear shift
lever .
Left brake
directional, of the
cylinder
pedal
brake
lever.
gear
shift
is inter-
PPC valve
(71, and uses hydraulic
the steering
and
(2) is interconnected
If the steering, tially
(6) on the
compartment
to actuate
Brake
slightly
cylinder
with
lever
operator’s
directional
with
the
gear shift lever is moved
to the left, the left steering disengaged
brakes.
only
and the
clutch
machine
turns
is parslowly
to the left.
.
Lever, pedal positions 0: Neutral
If the steering to the
0:
Left steering
clutch
disengaged
disengaged,
0:
Left steering
brake
applied
applied
0:
Right
steering
clutch
0:
Right
steering
brake
@:
Steering
0:
Brake
brake
applied
locked
’o-k9-3
disengaged applied
left.
and directional
left, the
left steering
and
to make
left
lever clutch
steering
the machine
is moved
brake turn
fully
is completely (8) is also
sharply
to the
STEERING CYLINDER
Y
+ Z
A
Z
1
2
3 I
I
u-u i-u A-A
114FO2020
1. Steering 2. Spring 3. Piston
cylinder
OUTLINE l
The case.
steering
PPC valve steering
1O-30
cylinder
It is actuated and
clutch.
is installed by the
operates
the
on the
oil pressure release
steering from
yoke
the
of the
BRAKE
CYLINDER
I
C
F
I
x-x
114FO2021
1.
Right brake cylinder
A.
From PPC valve
2.
Left brake cylinder
B.
To left brake cylinder
(port PI) port F
3.
Cylinder
C.
To left brake cylinder
port E
4.
Spring
D.
From PPC valve
5.
Piston
E.
To right brake cylinde
6.
Plug
F.
To right brake cylinder
(port P2) port C port B
10-31
PPC VALVE FOR STEERING D31 E-20 D3 1 P-20A D31P, PL, PLL-20 D31S. Q-20 D37E-5 D37P-5A
CLUTCH
AND BRAKE
Serial No. 42001 Serial No. 45001 Serial No. 45001 Serial No. 41001 Serial No. 3001 Serial No. 3001 -
-
42198 45784 45784 41054 3234 3152
b
2OSF3098
a.
P port (from charging
b.
T port (to tank)
c.
P2 port (brake valve:
d.
P4 port (steering
e.
PI port (brake valve:
f.
P3 port (steering
cylinder)
1 O-32 0
pump) to left brake cylinder)
valve:
to right steering
cylinder)
to right brake cylinder)
valve:
to left steering
B-B
A-A
I I4FO2022
c-c
1. Lever
7. Retainer
2. Disc
8. Metering
3. Joint
9. Valve
4. Piston
IO. Body
5. Plate
11. Centering
spring
spring
6. Collar
1o-33
PPC VALVE FOR STEERING CLUTCH CYLINDER OPERATION 1)
At neutral Ports
A
and
and
ports
nected
B
of
P3 and
to
drain
the
steering
P4 of the
chamber
clutch
cylinder
PPC valve
D through
are
fine
con-
control
hole f in spool (1). (Fig. 1)
2)
During fine control (neutral + fine control) When
piston
retainer
by metering When off
(4) starts
to be pushed
(9) is pushed; spring
this
same
drain
time, PP,
charging
pump
fine
chamber
it
chamber
by disc
(1) is also
(5),
pushed (Fig. 1)
(2), and moves down.
happens,
from
spool
is
control
hole
D,
at
and
connected
so
pilot
passes
to
through
fine
the
pressure
oil
from
the
control
hole
f and goes from port P3 to port A. When
the
spool
(1) is pushed
pressure
at
port
back
P3 becomes
and fine
is shut off from pump pressure At
almost
drain
the
same
chamber
D to
chamber
time, release
it
is
the
higher,
control
hole
f
PP.
connected
pressure
to
at port
P3. When
this
down
balanced (10)
in
the
the
(fine
drain
chamber
P3. The
spool
(I)
or
(2) is
and
relabody
f
is at
a point
midway
D
and
pump
pressure
not
metering
proportionally
to
control
also
rises
trol
lever.
ton
moves
lever,
change
until
spring
the so
(2)
amount the
is of
retainer
(9)
compressed movement
pressure
in proportion
to the travel
In this
the
to
chamber
A
P3) and
the
way,
a position
(the
anced. (Fig. 2)
1o-34 0
up
spring
at port
of
hole
PP) does
moves
spool (1).
Therefore, the
pressure
hole
(1)
of metering
position
control
between contacts
the force
with
tionship
spool
happens,
so that
force
same
steering
where as
of the
the return
the
at
port
of P3
of the
con-
cylinder
pis-
pressure
in
pressure
at
port
spring
are
bal-
E d ‘;
f is shut almost
pump
pressure
114FO2023
(Fig. 2)
114FO2024
3)
During fine control (where control lever is returned) When
disc
pushed
(5) starts
up
by
the
and the pressure When
this
nected
to
be returned,
force
of
spool
centering
(I)
spring
is (3)
at port P3.
happens,
to drain
fine
control
chamber
hole
D and
the
f
is con-
pressure
Qk!xl n
oil
at port P3 is released. If the
pressure
(1) is pushed
at
fine
control
ber
D. At almost
to
pump
port
down hole
by
f is shut the
pressure
pressure
is
to
a
the lever position.
off
same until
too
from
drain
cham-
the
pressure
that
spool
(Z), and
it is connected
PP, and the
pressure
far,
spring
time,
chamber
supplied
P3 recovers
P3 drops metering
pump at
port
corresponds
to
(Fig. 3)
(Fig. 3) 4)
114FO2025
At full stroke When
disc
tainer
(9)
hole
(5) pushes pushes
f is shut
connected
off from
with
Therefore,
the
pump pilot
ing
pump
passes
and
flows
to
pushes
the
down
down
piston
spool drain
pressure
chamber steering
A
fine
chamber
pressure
through
(4), and
(I),
D, and
chamber
oil from
the
fine
control
from
port
clutch
re-
control
cylinder
is PP.
charg-
hole P3,
f
and
piston.
(Fig. 4)
(Fig. 4)
114FO2026
1o-35 0
PPC VALVE FOR BRAKE CYLINDER *
The
output
when has
pressure
the
output
almost
for
reached
completely
the
pressure
brake
for
100%
disengaged),
than for the steering
is generated
the
steering
(when
so
the
the
clutch
clutch
stroke
is
is slower
clutch.
OPERATION 1)
At neutral Ports A and B of brake P2 of the PPC valve ber D through
cylinder
and ports
are connected
fine control
PI and
to drain
hole f in spool
cham-
(1). (Fig.
1)
2)
s
During fine control (neutral -+ fine control) When
piston
retainer
(4) starts
to be pushed
(9) is pushed;
metering When
(5),
(I) is also pushed
by
d
114FO2027
(Fig. 1)
spring (2), and moves down.
this
happens,
fine
from
drain
time,
chamber
it is connected
PP, so pilot passes
spool
by disc
to
pressure
through
fine
control
D, and
hole f is shut
at almost
pump
oil from control
the
pressure
off
same
chamber
the charging
pump
hole f and goes from
port PI to port A. When
the
spool
pressure
(I) is pushed
at
port
shut off from pump pressure At almost chamber When
ship
the same time,
this
happens,
the
force
with
the
in the
does
D and
to
in proportion sition as the
spool
the
spring
so the pressure to the travel the pressure
pressure
at port
return spring are balanced.
1 O-36
of
body
midway
(10)
chamber
movement at port
piston
PP) spool pro-
of
the
lever.
In
to a po-
A (the same
and the force
(Fig. 2)
PP
PI also rises
moves
in chamber PI)
I
between
(9) contacts
of the control
the brake cylinder
where
(1) and
relation-
(2) is compressed
amount
f’
(2) is bal-
PI. The
pressure
retainer
to drain
up or down
spring
at port
pump until
metering
lever,
this way,
pressure
change
portionally
(1) moves
metering of
PP.
at port PI.
hole f is at a point
hole not
(1). Therefore, control
chamber
higher, hole f is
it is connected
spool of
position
(fine control drain
becomes
D to release the pressure
so that anced
Pi
back and fine control
of the (Fig. 2)
114FO2028
= 0
3)
During fine control (where control lever is returned) When
disc
pushed
(5) starts
up
by
the
and the pressure When
this
nected
to drain
to be returned, force
of
spool
centering
(1) is
spring
(3)
at port PI.
happens,
fine
chamber
control
hole
f
is con-
D and the pressure
oil at
port PI is released. If the pressure is pushed control
at port
down
hole
At almost
f is shut
pressure
chamber until
a pressure drain
PP, and
brake
chamber
in the valve
piston
in from
port
to fill the chamber
D.
to pump pressure
is
PI recovers
to
to the lever position.
on the side that
oil passes through
chamber
pump
at port
cylinder
D flows
drain
the
the pressure
(1)
(2), and fine
it is connected
that corresponds
the
too far, spool
spring
off from
the same time,
supplied When
Pi drops
by metering
returns,
oil
fine control is not working.
P2, and enters
in
hole f The
chamber
B
with oil (Fig. 3)
(Fig. 3)
4)
114FO2029
At full stroke When
disc
tainer
(9) pushes
f is shut nected
(5) pushes down
off from
with
drain
pump pilot
the
pump
passes through
cylinder
piston (I), fine
chamber
pressure
fore,
to chamber
down spool
pressure
A from
oil
control
D, and
chamber from
fine control port
(4), and
rehole
is con-
PP. Therethe
charging
hole f and flows
PI, and pushes
the brake
piston.
The
oil
port
P2 through
returning
drain chamber
from fine
chamber
control
hole
B passes
from
f’ and flows
to
D. (Fig. 4)
(Fig. 4)
114FO2030
1o-37
PPC VALVE FOR STEERING CLUTCH AND BRAKE D31 E-20 D3 1 P-20A D31P. PL, PLL-20 D31S, Q-20 D37E-5 D37P-5A
Serial Serial Serial Serial Serial Serial
No. No. No. No. No. No.
42199 and up 45785 and up 45785 and up 41055 and up 3235 and up 3153 and up
A
0
C
f
a
b
d
e SAD01
a.
P port (from
b.
T port (to hydraulic
c.
P2 port (brake valve:
d.
P4 port
e.
PI port (brake valve:
f.
P3 port
1o-37- 1 0
power
(steering (steering
train
pump)
tank) to L.H. brake cylinder)
valve:
to R.H. steering
cylinder)
to R.H. brake cylinder)
valve:
to L.H. steering
cylinder)
179
A-A
B-B
F-F
SAD01 180
1.
Spool
2.
Metering
3.
Centering
4.
Piston
5.
Disc
6. Nut (for lever connection) spring spring
7. Joint 8. Plate 9. Retainer 10. Body
1 O-37-2 Co
PPC VALVE FOR STEERING CLUTCH CYLINDER
OPERATION 1)
At neutral Ports A and B of the steering and ports nected
2)
to drain
chamber
During fine control When
clutch cylinder
P3 and P4 of the PPC valve D. (Fig. 1)
(neutral
+ fine control)
piston (4) starts to be pushed
retainer
(9) is pushed;
by metering When
(1) is also pushed
SADOI 181 (Fig. 1)
port P3 is shut off from drain
D, and at almost
connected
to pump
lot pressure from
spool
by disc (5),
spring (2), and moves down.
this happens,
chamber
(1)
are con-
the same
pressure
oil from
the
time,
chamber
charging
it is
PP, so pipump
goes
port P3 to port A.
When
the
spool
(1) is pushed
from
pressure
pump
at port P3 becomes
pressure
chamber
At almot
the same time,
chamber
D to release
When
the happens,
so that the force ship
in the
PP.
it is connected
the pressure
position
to drain
at port P3.
spool (1) moves of metering
anced with the pressure does not change
higher,
back and port p3 is shut off
up or down
spring
(2) is bal-
at port P3. The relation-
of spool
(1) and
until retainer
body
(9) contacts
(IO) spool
(1). Therefore,
metering
proportionally the
control
to
spring
the
lever,
so the
also rises in proportion trol lever. linder pressure ure
In this way,
(11)
in chamber
at port
steering
moves P3) and
cylinder
is compressed
of
movement
pressure
at
to the travel
port
to
a
position
A (the same the
pushed
force
where
cythe
as the press-
of the
by steering (Fig. 2)
of P3
of the con-
the piston of steering
turn spring are balanced.
’o-i7-3
(2)
amount
piston clutch
of re(Fig. 2)
3)
During
fine control
(where When
control
lever is returned)
disc (5) starts to be returned,
pushed
up by the force
and the pressure When
(1) is
spring
(3)
at port P3.
this happens,
chamber
spool
of centering
D and
port P3 is connected
the
pressure
to drain
oil at port
p3 is
released. If the pressure is pushed
at port P3 drops too far, spool (1)
down
by metering
P3 is shut off from the same time, chamber
drain
spring
chamber
it is connected
PP, and the pump
until the pressure
(21, and port D. At almost
to pump
pressure
at port p3 recovers
sure that corresponds
pressure
is supplied to a pres-
to the lever position.
(Fig.
3)
4)
At full stroke When
disc (5) pushes
tainer
(9) pushes
down
off from drain chamber pump
pressure
spool
pressure
oil from A from
the
piston (I),
(4). and
PP. Therefore, charging
pump
port P3, and pushes
clutch cylinder
re-
port p3 is shut
D, and is connected
chamber
chamber of steering
down
with
the pilot flows
to
the piston
(11). (Fig. 4)
(Fig. 4)
PPC VALVE FOR BRAKE CYLINDER
OPERATION 1)
At neutral Ports PI
A and
drain
B of brake
P2 of the
and
chamber
cylinder
PPC valve
(11) and
are
ports
connected
to
D. (Fig. 1)
SAD01185 2)
During fine control When
piston
retainer
spring D, and
connected lot
port
oil
from
the
spool
(1) is pushed
pressure
the same
D to release
so that
the with
in the
does
not change
(1). Therefore, the
PP.
spool
spring
lever,
so
also rises
in proportion
trol
In this
lever.
der
(11)
ure
in chamber
port
PI)
balanced.
1o-37-5 0
moves
way, to
(2)
is
of
(2) is balbody
compressed
pressure piston
a position of the
(IO) spool
movement
to the travel the
PI.
(9) contacts
A (the same
and the force (Fig. 2)
the
to drain
Pl. The relation(1) and
amount
off
up or down
spring
at port retainer
the
higher,
at port
(1) moves
of spool
until
metering
control
goes
Pl is shut
it is connected
of metering
to
pump
the pressure
position
proportionally
it is
PP, so pi-
PI becomes
chamber
the pressure
ship
charging
drain
time,
chamber
port
time,
force
same
back and
pressure
chamber
anced
down.
the
the
(5),
pushed
P1 is shut off from
at port
this happens,
by disc
1)
A.
At almot When
(Fig.
(1) is also
pressure
PI to port
pump
spool
at almost
When from
control)
to be pushed
port
to pump
pressure
-fine
(2), and moves
this happens,
chamber
from
(4) starts
(9) is pushed;
by metering When
(neutral
at
of the
of brake
where
of
port
the
PI con-
press-
as the pressure return
> I1
cylin-
spring
at are
SAD01 I 86 (Fig. 2)
3)
During
fine control
(where When
control
lever is returned)
disc (5) starts to be returned,
pushed
up by the force
and the pressure When
(I)
spring
is (3)
at port PI. port PI is connected
this happens,
chamber
spool
of centering
D and
the
pressure
to drain
oil at port
PI
is
released. If the pressure is pushed
at port PI drops too far, spool (I)
down
by metering
PI is shut off from the same time, chamber
drain
it is connected
PP, and the pump
until the pressure the
piston
oil in drain
(2). and port D. At almost
to pump
pressure
to a pres-
to the lever position.
of brake
chamber
pressure
is supplied
at port Pi recovers
sure that corresponds When
spring
chamber
cylinder
D flows
(11) returns,
in from
port PI in
the valve on the side that is not working.
The oil
passes through
port P2, and enters chamber
fill the chamber
with oil (Fig. 3)
B to
(Fig. 3) 4)
At full stroke When
disc (5) pushes
tainer
(9) pushes
down
off from drain chamber pump
pressure
pressure
oil from A from
of brake cylinder oil returning
the
piston
spool (I),
(4). and
PP. Therefore, charging
re-
port PI is shut
D, and is connected
chamber
chamber The
down
pump
port PI, and pushes
with
the pilot flows
to
the piston
(II). from
chamber
port P2 and flows to drain
B passes
chamber
from
D. (Fig. 4)
(Fig. 4)
1 O-37-6 @
BEVEL GEAR SHAFT
17 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17.
1 O-38
16
Final drive flange Outer drum (Brake drum) Pressure plate Collar Clutch spring Clutch spring Inner drum Bevel gear shaft hub Release yoke Bearing cage Bearing cage Adjustment nut Bevel gear Bevel gear shaft Retainer Clutch disc Clutch plate
AND
STEERING
15
CLUTCH
Il3Fl8014
OUTLINE l
l
The steering clutch is a wet type, multiple disc, spring-boosted clutch. There are steering clutches installed on the left and right at both ends of the bevel gear shaft, between the bevel gear shaft and the final drive. The steering clutches transmit or cut the transmission of motive force from the bevel gear shaft to the final drive to change the direction of the machine.
1.
L.H. steeting clutch ENGAGED When the left steering lever is not being pulled, no oil enters steering booster cylinder (18) from the steering control valve. As a result, release yoke (9) is not actuated, and the tension of clutch springs (5) and (6) makes pressure plate (3) push clutch disc (16) and clutch plate !I 7) into close contact with inner drum (7). In this condition, the motive force from bevel gear shaft (13) is transmitted from inner drum (7) through the clutch disc and clutch plate to outer drum (2). It is then transmitted to final drive from flange (I), which forms one unit with the outer drum. Therefore, if the right steering clutch is also engaged, the machine will travel in a straight line.
-r,--g
77-T” 2.
L.H. steetring DISENGAGED When the left steering lever is pulled, the steering control valve is actuated and oil enters steering booster cylinder (I 8). As a result, release yoke (9) is pushed to the left, and retainer (I 5) and pressure plate (3) move to the left as one unit. When this happens, the close contact between clutch disc (16) and clutch plate (I 7). and inner drum (7) is released. In this condition, the motive force from bevel gear shaft (13) -is transmitted only as far as inner drum (7). It is not transmitted to outer drum (2). Therefore, if the right steering clutch is engaged, the machine will turn to the left.
1
2
17
16
15
3
5
6
7
9
FI
1318012
FI
1318013
1813
L
17 16
15
10-39
8
5
7
13
8
A-A
B-B Il3Fl8017
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14.
10-40
Steering case cover Lever Lever Yoke Lever Rod Anchor Adjustment nut Spring End Brake band Lining Pin Pin
OUTLINE l
l
The steering brake is an anchor type contracting band brake which is tightened on the outside circumference of the brake drum (steering clutch outer drum). The steering brake has two functions: sharp turning and stopping. It is used to stop the machine when the brake pedal is depressed, and to steer the machine when the steering lever is pulled to move lever (3). When parking the machine, depress the brake pedal and apply the brake lock lever to hold the pedal in position.
.
1.
2.
When steering to the left, pull the left steering lever and the left steering clutch is disengaged; when steering to the right, pull the right steering lever and the right steering clutch is disengaged. However, the motive force passing through the steering clutch is not completely cut, so there is dragging for a short time and the machine turns in a wide circle. To adjust the radius of the turn, depress the brake pedal on the side to which the machine is turning. This will tighten the brake band on the outer drum (brake drum) and prevent the dragging. Operation of brake when traveling forward When the brake pedal is depressed, lever (2) moves up and pulls up lever (5) to contract both ends of the brake band to the inside. When this happens, the outer drum is rotating forward (clockwise in the diagram), so the brake band is pulled in the direction of rotation. This tension is borne by end (10) installed by a pin to lever (51, but actually, it is borne by point A at the mount of the lever and end. Therefore, the brake band restricts the brake drum with the fulcrum at point A, and pushes out point B on the other side to the right.
‘A
FI
1318023
FI
1318024
Operation of brake when traveling in reverse In the same ways as when traveling forward, when the brake pedal is depressed, both ends of the brake band are contracted to the inside. When this happens, the outer drum is rotating in reverse (counterclockwise in the diagram), so the brake band is pulled in the direction of rotation. This tension is borne by mount B of rod (6) and the brake band. Therefore, the brake band restricts the brake drum with the fulcrum at point B, and pushes out point A on the other side to the left.
10-41
FINAL *
DRIVE
The diagram shows the D31 E, S-20.
8
Il3Fl8020
1. Final dive flange
OUTLINE
2. Cage 3. Pinion shaft (10 teeth) 4. Gear (63 teeth) 5. Final drive case 6. Sprocket 7. Ring 8. Sprocket
boss
9. Sprocket
shaft
10. Cover 1 1. Floating seal
1O-42
l
The final drive is a spur gear, one stage reduction, splash lubrication
type.
TRACK FRAME D31 E, P, PL, PLL-20 D31 S, Q-20 *
The diagram
shows the D31 E, S, Q-20.
7
6
114FO2031
1.
Idler
OUTLINE
2.
idler cushion
l
3.
Track
4.
Carrier
5.
Sprocket
6.
Track roller
7.
Track frame
The
track
weight, roller
track
frame and
(3)
using
the
train transmitted .
Number
from
D31 E, S, Q-20
D31 PLL-20
the
the
whole
machine
motive
force
sprocket
machine by
driving
of the
power
(5).
of rollers Number of carrier roller (each side)
Model
D31 P, PL-20
supports
moves
I
I I
1
1 2
Number of track roller (each side) I
5
-
I
6
I
*
1o-43
D31 P-20A D37E-5 D37P-5A *
The diagram
shows the D31 P-20A.
D37P-5A.
% 6
113F18307
1o-44
1.
Idler
OUTLINE
2.
Idler cushion
l
3.
Track
4.
Carrier
5.
Sprocket
6.
Track roller
7.
Track frame
The
track
weight, roller
track
frame
moves
(3) using
the
train transmitted l
Number
supports
and
of rollers
from
the
the
whole
machine
motive sprocket
force (5).
machine by
of
the
driving power
MAIN
FRAME
AND
SUSPENSION
D31 E, S, Q-20
Il3Fl8022
I. 2. 3. 4.
Main frame Cross-bar Track frame Bracket
OUTLINE l The suspension consists of left and right brackets (4) and cross bar (2) installed to the main frame. It is a fixed type connecting the main frame and track frame.
1o-45
D31 P-20A D31 P, PL, PLL-20 D37P-5A D37E-5
113F18308
1. 2. 3. 4.
Main frame Cross-bar Track frame Bracket
OUTLINE l The suspension consists of left and right brackets (4) and crosS bar (2) installed to the main frame. It is a fixed type connecting the main frame and track frame.
1 O-46
STRUCTURE
AND
HYDRAULIC POWER ANGLE, D31E-20 D31P-20A D37E-5 D37P-5A
FUNCTION
HYDRAULIC
PIPING
PIPING
POWER TILTDOZER
Serial Serial Serial Serial
No. No. No. No.
42001 45001 3001 3001 -
- 42713 - 47616 3730 3660
114FO2032
OUTLINE 1. Blade angle cylinder
l
The oil in hydraulic
2. Air bleeding valve
draulic
3. Hydraulic
sent to hydraulic
pump
pump
The hydraulic
5. Angle selector valve
oil to lift cylinder
control valve
cylinder
7. Hydraulic filter
the
8. Hydraulic
lever.
tank
9. Suction safety valve 10. Blade tilt cylinder
control
If the
of the
hydraulic
position, stalled
valve
the to the
control
oil
switches
(4), angle
(10) to operate
movement
up by hy-
to the engine,
and is
control valve (6).
4. Blade lift cylinder 6. Hydraulic
tank (8) is sucked
(3) installed
enters
hydraulic
the work valve
the flow
cylinder blade
(I),
of
or tilt
according
to
equipment
control
is at the
“HOLD”
hydraulic
filter
(7)
tank and returns
in-
to the
hydraulic tank.
10-47 0
STRUCTURE
D31 E-20 D31P-20A D37E-5 D37P-5A
AND
Serial Serial Serial Serial
FUNCTION
No. No. No. No.
42714 47617 3731 3661
HYDRAULIC
PIPING
and up and up and up and up
Si3DO2145
1. R.H. blade 2. Air 3.
angle
bleeding
Hydraulic
4. R.H. blade
cylinder
valve
pump
draulic
lift cylinder
5. Hydraulic
control
6.
Hydraulic
filter tank
OUTLINE . The oil in hydraulic
valve
pump
sent to hydraulic The
hydraulic
7.
Hydraulic L.H. blade
lift cylinder
according
9.
L.H. blade
angle
ment
tilt cylinder
and cylinder
(9), or tilt
control
hydraulic
up by hy-
to the engine, valve
valve
cylinder
and
is
(5).
switches
the flow cylinders
(10) to operate
movement
of the
the
work
of (1)
blade equip-
lever. control
the oil enters
to the hydraulic tank.
(7) is sucked
(4) and (8), angle
to the
control
If the position,
1028
control
oil to lift cylinders
8.
10. Blade
tank
(3) installed
tank
valve hydraulic
and returns
is at the filter
“HOLD”
(6) installed
to the hydraulic
STRUCTURE
STRAIGHT
AND
FUNCTION
HYDRAULIC
PIPING
TILTDOZER
D31P, PL-20 Serial D31PLL-20 Serial
No. 45001 - 47616 No. 45001 - 47653
Il3Fl8025
1.
Hydraulic
tank
2.
Hydraulic
pump
3.
Hydraulic
control
4.
Blade lift cylinder
sent to hydraulic
5.
Blade tilt cylinder
The
6.
Hydraulic
filter
OUTLINE l
valve
The oil in hydraulic draulic
pump
hydraulic
control control
oil to lift cylinder ate the blade work
stalled hydraulic
the to the tank.
valve
control oil
to the
enters
hydraulic
up by hy-
engine,
and
is
(3). switches
(4), or tilt cylinder control
hydraulic
position,
(1) is sucked valve
according
equipment
If the
tank
(2) installed
the flow
of
(5) to oper-
to the movement
of the
lever. valve
is at the
hydraulic tank
and
filter returns
“HOLD” (6)
in-
to the
STRUCTURE
AND
FUNCTION
HYDRAULIC
PIPING
D31P, PL-20 Serial No. 47617 and up D31PLL-20 Serial No. 47654 and up
SBD02146
1. R.H. blade
lift cylinder
OUTLINE . The oil in hydraulic
2.
Hydraulic
pump
3.
Hydraulic
control
4.
Hydraulic
filter
sent to hydraulic
tank
The hydraulic
valve
5.
Hydraulic
6.
L.H. blade lift cylinder
7.
Blade tilt cylinder
draulic
pump
control
control
oil to lift cylinders operate
If the hydraulic
tank.
’O-i9-’
valve
valve
and is
(3).
switches
the flow
(1) and (61, tilt cylinder control
control
of
(7) to
to the movement
of
lever.
valve
the oil enters hydraulic
to the hydraulic
up by hy-
to the engine,
the blade according
the work equipment position,
tank (5) is sucked
(2) installed
is at the
“HOLD”
filter (4) installed
tank and returns to the hydraulic
STRUCTURE
AND
HYDRAULIC
FUNCTION
PIPING
DOZER SHOVEL D31S. Q-20 Serial No. 41001 - 41183
1.
Hydraulic tank
OUTLINE
2.
Hydraulic
pump
l
3.
Hydraulic
control valve
4.
Bucket lift cylinder
sent to hydraulic
5.
Bucket dump cylinder
The hydraulic
Hydraulic
oil to lift cylinder
6.
oil filter
The oil in hydraulic draulic
pump
operate
the
tank (1) is sucked
(2) installed control
valve
position, stalled
the
according
to the
enters
hydraulic
the flow of
cylinder
to the
(5) to
movement
control lever.
control
oil
switches
(4), or dump
bucket
hydraulic
and is
control valve (3).
of the work equipment If the
up by hy-
to the engine,
valve
is at the
hydraulic tank and
filter returns
“HOLD” (6)
in-
to the
hydraulic tank. The hydraulic filter is a cartridge
type.
1O-49-2
STRUCTURE
D31S, Q-20
HYDRAULIC
AND FUNCTION
PIPING
Serial No. 41184 and up
SBOO2147
1. R.H. bucket lift cylinder 2. 3.
Hydraulic
pump
R.H. bucket dump
4. Hydraulic
control
cylinder valve
OUTLINE . The oil in hydraulic draulic
pump
sent to hydraulic
control
5. Hydraulic
oil filter
The hydraulic
6. Hydraulic
tank
oil to lift cylinders
7.
L.H. bucket dump
cylinder
8. L.H. bucket lift cylinder
tank (6) is sucked
(2) installed control
If the
valve
switches
control
valve
is at the
1o-g-3
of
cylinders
control
to the lever.
“HOLD”
filter (5) installed
tank and returns to the hydraulic
tank. The hydraulic
the flow
the bucket according
the oil enters hydraulic
to the hydraulic
and is
(4).
of the work equipment
hydraulic
position,
valve
(1) and (8), or dump
(3) and (7) to operate movement
up by hy-
to the engine,
filter is a cartridge
type.
STRUCTURE AND FUNCTION
HYDRAULIC
HYDRAULIC CIRCUIT DIAGRAM
CIRCUIT DIAGRAM
STRAIGHT TILTDOZER D31P. PL, PLL-20
0
FLOAT
LOWER
RAISE
LEFT TILT
RIGHT TILT 5
I
I
II
T
SAD02178
1. Hydraulic
tank
2.
pump
Hydraulic
5.
Blade tilt valve spool
6.
Blade tilt cylinder
D31P. PL-20
Serial
No.: 45001 - 47616
7. Check valve
D31PLL-20
Serial
No.: 45001 - 47653
8.
Blade lift valve spool
9.
Suction
Hydraulic
3.
(SAL(2)-036)
pump
(SAR(2)-045)
D31P, PL-20
Serial
No.: 47617
and up
10.
D31PLL-20
Serial
No.: 47654
and up
11. Hydraulic
Main
relief valve
Set pressure: 4. Check valve
1020
12.7 MPa I175 kg/cm2}
valve for blade
lower
Blade lift cylinder Cracking
12. Hydraulic Cracking
filter pressure:
0.1 MPa II.05
tank breaker pressure:
kg/cm*}
relief valve
0.09 MPa IO.9 kg/cm21
HYDRAULIC
CIRCUIT SYSTEM
STRAIGHT TILTDOZER D31 P, PL, PLL-20 + Engine running, hydraulic
control
lever in “HOLD”.
114FO2034
10-51
STRUCTURE
AND
FUNCTION
HYDRAULIC POWER
ANGLE,
D31E-20 D31P-20A D37E-5 D37P-5A
HYDRAULIC
CIRCUIT
DIAGRAM
CIRCUIT DIAGRAM
POWER TILTDOZER
Serial Serial Serial Serial
No.: No.: No.: No.:
42001 45001 3001 3001 -
- 42713 - 47616 3730 3660
i 13 8
f4
9
I I
1
I
IL--
II
-_ 4
-Pc 7
__!
I
SAD02179
1. Hydraulic
tank
2.
Hydraulic
pump
3.
Main
relief
10. Blade (SAL(2)-036)
valve
4. Check valve 5. Blade
tilt,
6.
Left angle
7.
Right Blade
1O&-.2
valve
selector
angle
8. Air bleed 9.
angle
selector
valve
tilt cylinder
valve valve
angle
11. Suction
cylinder
safety
valve
12. Check
valve
13. Blade
lift valve
14. Blade
lift cylinder
15. Suction
valve
16. Hydraulic
filter
17. Hydraulic
tank
for blade breaker
LOWER relief
valve
STRUCTURE
AND
HYDRAULIC POWER
ANGLE,
D31E-20 D31P-20A D37E-5 D37P-5A * Engine
FUNCTION
CIRCUIT SYSTEM
POWER TILTDOZER
Serial No.: 42001 - 42713 Serial No.: 45001 - 47616 Serial No.: 3001 - 3730 Serial No.: 3001 - 3660 running, hydraulic control lever in “HOLD”.
HYDqAULlC
CIRCUIT
SYSTEM
HYDRAULIC CIRCUIT DIAGRAM
STRUCTURE AND FUNCTION
HYDRAULIC
CIRCUIT DIAGRAM
POWER ANGLE, POWER TILTDOZER D31E-20 D31P-20A D37E-5 D37P-5A
Serial Serial Serial Serial
No.: No.: No.: No.:
42714 and up 47617 and up 3731 and up 3661 and up
I? f\
0 w-f’
14
I
I
7-a
’
h 15
LOWER
FLOAT
13
14 I
~ c\
0
RAISE
i
I-
-L
T
TT
T
:
7
I
1C
LI I -
I
A
'
tank
Hydraulic
pump
3.
Main
(SAR(2)-045)
11.
Blade tilt cylinder
12. Check valve
relief valve
13.
Blade lift valve
4. Check valve
14.
Blade lift cylinder
5. Blade angle valve
15. Suction
6.
16. Hydraulic
7.
17.4 MPa I178 kg/cm*1
Blade angle cylinder Suction
safety valve
Cracking
pressure:
8. Air bleed valve 9. Check valve
’O-F’
SAD02180
10. Blade tilt valve
1. Hydraulic 2.
Set pressure:
'
24.5 MPa {250 kg/cm*}
Cracking 17. Hydraulic Cracking
valve for blade
LOWER
filter pressure:
0.1 MPa Il.05
tank breaker pressure:
kg/cm?
relief valve
0.09 MPa IO.9 kg/cm3
STRUCTURE
AND
HYDRAULIC POWER ANGLE, D31E-20 D31P-20A D37E-5 D37P-5A + Engine
FUNCTION
HYDRAULIC
CIRCUIT
SYSTEM
CIRCUIT SYSTEM
POWER TILTDOZER
Serial No.: 42714 Serial No.: 47617 Serial No.: 3731 Serial No.: 3661 running, hydraulic
and up and up and up and up control lever in “HOLD”.
SBD02151
STRUCTURE
AND FUNCTION
HYDRAULIC
HYDRAULIC
CIRCUIT
DIAGRAM
CIRCUIT DIAGRAM
DOZER SHOVEL D31S, Q-20
SAD02181
1. Hydraulic
tank
2.
pump
Hydraulic D31S,
Q-20 Serial
Hydraulic D31S, 3.
Main
7. (SAL(2)-036)
pump
relief
No.: 41001 - 41183
(SAR(2)-045)
Q-20 Serial
No.: 41184
and up
valve
Set pressure: Bucket
6. Safety Cracking
1o-&54
dump valve
valve
Bucket
9.
Check valve
10. Bucket
17.2 MPa II75
kg/cm*}
12. Bucket 13. Hydraulic
valve
spool
for bucket
pressure:
dump
9.8 MPa {IO0 kg/cm*)
Cracking 14. Hydraulic Cracking
for bucket
pressure:
8.
11. Suction
4. Check valve 5.
Safety Cracking
dump
kg/cm*}
cylinder
lift valve valve
tilt
19.1 MPa {I95
spool
for bucket
lower
lift cylinder filter pressure: tank
0.1 MPa II.05
breaker
pressure:
relief
kg/cm*}
valve
0.09 MPa IO.9 kg/cm21
HYDRAULIC
CIRCUIT SYSTEM
DOZER SHOVEL D31 S, Q-20 *
Engine running,
hydraulic
control
lever in “HOLD”.
7
114FO2038
STRUCTURE
AND
HYDRAULIC D31E-20 D3 1 P-20A D31P. PL, PLL-20 D31S, Q-20 D37E-5 D37P-5A
HYDRAULIC
FUNCTION
CONTROL
CONTROL Serial Serial Serial Serial Serial Serial
No.: No.: No.: No.: No.: No.:
42001 45001 45001 41001 3001 3001
- 42713 - 47616 and up and up - 3730 - 3660
($)-
@
Q@
0 2
I D31E-20 D31P-20A D37E-5 D37P-5A
Serial Serial Serial Serial
No. No. No. No.
42199 and up 45825 and Up 3235 and UP 3153 and up
SRDOI 189
Lever positions Blade control lever Selector
button (tilt/angle)
(Power tilt, angledozer) Lock lever Main control valve
STRUCTURE AND FUNCTION
D31E-20 D31P-20A D37E-5 D37P-5A
Serial Serial Serial Serial
No.: No.: No.: No.:
HYDRAULIC CONTROL
42714 and up 47617 and up 3731 and up 3661 and up
SBDO2152
Lever positions Power angle, power tiltdozer HOLD Blade
RAISE
Blade
LOWER
Blade
FLOAT
1.
Blade
2.
Lock lever
control
3.
Main
control
lever valve
RIGHT TILT LEFT TILT R.H. angle
’o-26-1
STRUCTURE
AND FUNCTION
HYDRAULIC D31E-20 D31 P-20A D31P, PL, PLL-20 D31S. Q-20 D37E-5 D37P-5A
TANK Serial Serial Serial Serial Serial Serial
No.: No.: No.: No.: No.: No.:
HYDRAULIC
AND 42001 45001 45001 41001 3001 3001 -
TANK AND
FILTER
FILTER
- 42713 - 47616 and up and up 3730 3660
A-A
FI
1. 2. 3. 4. 5.
Hydraulic control valve Hydraulic filter Hydraulic tank Filter head Bypass valve
A. B.
From control valve To hydraulic tank
’o-F2
OUTLINE l
The hydraulic
filter
is a cartridge
type.
1318037
STRUCTURE
D31E-20 D31P-20A D37E-5 D37P-5A
AND
Serial Serial Serial Serial
FUNCTION
No.: No.: No.: No.:
HYDRAULIC
CONTROL
42714 and up 47617 and up 3731 and up 3661 and up
SAD02153
1.
Hydraulic
control
2.
Hydraulic
filter
3.
Hydraulic
tank
4.
Filter head
5.
Bypass valve
A.
From control
B.
To hydraulic
valve
OUTLINE
.
The hydraulic
filter is a cartridge
type.
valve tank
1o-57 0
STRUCTURE
AND
HYDRAULIC
FUNCTION
HYDRAULIC
CONTROL
D31E-20 Serial No.: D31 P-20A Serial No.: D31P. PL, PLL-20 Serial No.: D37E-5 Serial No.: D37P-5A Serial No.:
42001 45001 45001 3001 3001 -
CONTROL
VALVE
VALVE - 42713 - 47616 and up 3730 3660
k-C
l--D
Il3FI8031
P. AI. B1. Aa. B2. T.
From hydraulic pump To tilt cylinder bottom (R.H. TILT) To tilt cylinder head (L.H. TILT) To lift cylinder bottom (LOWER) To lift cylinder head (RAISE) To hydraulic tank
OUTLINE l
The control
valve
is a 2-spool
valve
with spools
for blade lift, and tilt/angle. l
Suction
valve
(22)
pressure
from
being
acts
to
formed
prevent at the
bottom when the blade is lowered.
negative
lift cylinder
2
1
3
4
:\
114 lil 1'6
i7 B-B
18
20
21
22
23
13 12 A-A
D-D Il3Fl8032
1. 2. 3. 4. 5. 6. 7. 8.
Valve body Main relief valve Blade tilt spool Blade lift spool Detent and spring case Return spring Detent plug Detent spring
9. Detent ball 10. 11. 12. 13. 14. 15. 16.
Detent ball Plug Spring case Return spring Plug Checkvalve Check valve spring
17. 18. 19. 20. 21. 22. 23.
Plun Plug Plug Plug Suction valve spring Suction valve Plug
10-59
STRUCTURE
D31E-20 D31P-20A D37E-5 D37P-5A
AND
FUNCTION
HYDRAULIC
CONTROL
VALVE
Serial No.: 42714 and up Serial No.: 47617 and up Serial No.: 3731 and up Serial No.: 3661 and up
Al
Bl
A2
A3
82
B3
#A
SAD02
hydraulic
OUTLINE
P.
From
Al.
To R.H. angle
cylinder
bottom
(L.H. ANGLE)
Bl.
To L.H. angle
cylinder
bottom
(R.H. ANGLE)
A2. To tilt cylinder
head
(R.H. TILT)
B2. To tilt cylinder
bottom
(L.H. TILT)
A3. To lift cylinder
bottom
(LOWER)
B3. To lift cylinder
head
pump
DA. Seal drain T.
To hydraulic
(RAISE)
.
The control for blade
.
Main
’0-i9-’
valve lift, tilt,
relief
valve
is a 3-spool
.
The set pressure adjusted turn
pressure
with
(2) sets the pressure
spools
in the cir-
kg/cm*}.
of the main
by adjustment of the
valve
and angle.
cuit to 17.5 MPa 078
One tank
I54
relief
valve
can
be
screw.
adjustment
by 2.4 MPa t24.8
screw kg/cm*}.
adjusts
the
STRUCTURE AND FUNCTION
HYDRAULIC CONTROL VALVE
i
20
13
14
12
.I1
21
22
23
‘”
A-A
D-D
SAD02155
1.
Valve
body
2.
Main
relief
3.
Angle
4.
Tilt valve
spool
12. Plug
5.
Lift valve
spool
13. Spring
case
6.
Detent
case
14. Return
spring
7.
Spool
return
8.
Detent
plug
valve
spring
17. Check valve
10. Detent
ball
18. Plug
11. Detent
ball
9. valve
assembly
spool
spring
15.
Detent
19. Suction 20.
Plug
16. Check valve
Suction (Lower
21.
Suction
22.
Plug
23.
Plug
spring
safety
valve
valve side) valve
spring
’O-i9-*
HYDRAULIC
CONTROL
VALVE
D31 S, Q-20
Il3Fl8033
P. From hydraulic pump AI. To dump cylinder head (TILT BACK) B1. To dump cylinder bottom (DUMP)
OUTLINE l The control valve is a 2-spool valve with spools for bucket lift, and dump. l
Suction valve (22) acts to prevent negative pressure from being formed at the lift cylinder head when the bucket is lowered.
1 O-60
AZ. TO lift cylinder head (LOWER) Bz. To lift cylinder bottom (RAISE) T. To hydraulic tank
l
Safety valves (18) and (19) have a suction function, and relieve the circuit when external shock causes abnormally high pressure.
B-B
18
19
\
20
A-A
21
22
23
'10 \
'11 Il3Fl8034
1. Valve body
2. 3. 4. 5. 6. 7. 8.
Main relief valve Bucket dump spool Bucket lift spool Detent and spring case Return spring Detent plug Detent spring
9. Detent ball 10. Detent ball 1 1. 12. 13. 14. 15. 16.
Plug Spring case Return spring Plug Check valve Check valve spring
17. 18. 19. 20. 21. 22. 23.
Plug Bucket dump safety valve Bucket tilt safety valve Plug Suction valve spring Suction valve Plug
lo-61
STRUCTURE
AND
FUNCTION
ANGLE
SELECTOR
VALVE
ANGLE SELECTOR VALVE D31E-20 D31P-20A D37E-5 D37P-5A
No.: No.: No.: No.:
Serial Serial Serial Serial
42001 45001 3001 3001 -
- 42713 - 47616 3730 3660
P2
Pl
I I4FO2040
1.
Plug
2.
Return
3.
Valve
4.
Spool
selector
5.
Push pin
angle
6.
Solenoid
OUTLINE spring
l
assembly
CI. To tilt cylinder
l
bottom
(From tilt valve) head)
PI. Blind (to left angle cylinder P2. To right angle
(
the
cylinder
bottom)
bottom
(blind)
): This shows the left angle selector valve.
switch
control
at the
lever
valve
knob
switches
top
of the
work
is operated, the
flow
of
equip-
the oil
angle to
the
cylinder.
When
the
angle
the
flow
the
oil flows
possible
C2. From tilt valve (To tilt cylinder
When ment
body
selector
of oil to the only
to the
to tilt the blade.
valve
angle tilt
is switched
OFF,
cylinder
is cut,
cylinder
to make
and it
OPERATION
pq
Left tilt
114FO2041
1.
When
control
lector switch When
the
operated, circuits
lever
is at right tilt and angle
angle
selector
solenoid
(6)
between
ports
C2 are
switch is
Pi
and
tween
ports
dition,
if
moved
to RIGHT TILT, tilt valve
the
right
work
and
P and A and ports When flows
this from
and
enters
port
angle
selector
Cl
and
the
not
the
between circuit
In this
control spool
circuit
being so
and the
is opened.
equipment
opens
oil
entering
becon-
lever
When the
port
this
circuit
happens,
the
to
cylinder
angle
the
oil flows
only
oil
pressure
in
tilted
C2 then
flows
to
the head end of tilt cylinder
to the the
angle tilt
circuit
selector (10)
valve
is closed,
cylinder. rises,
port
the
CI
(9).
When blade
in so the is
to the right.
is
(7) moves
between
ports
T and B.
happens, port
closed, C2
is
deenergized,
Pz and
Cl
The
and enters
ports
to the
se-
is OFF
the
P, pushes
A, and
flows
oil
from
check to
port
valve
the
pump
(8) open,
C2 of the
left
valve.
1 O-63
,,, Right angle Switch ON
