NZ Governor [PDF]

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@ NZ GOVERNOR



PREFACE This Service Manual describes the construction and maintenance. of and disassembling procedures for Model



NZ61/NZ115 Hydraulic Governor and controller. Read this Manual carefully to use the governor correctly.



Keep this Manual under care at a clearly identified place accessible for the operator to refer to it at any time.



The text and illustrations of this Manual may partly disagree with the actual product as depended on its specifications. Also note that parts used are subject to change for improving the quality and performance of or for reasons of safety of this product.



Use our genuine parts or specified parts for replacement parts. Order a part to your nearest sales agent or YANMAR parts sales agent. When ordering a part, clearly specify the Part Name @art description), Part No., Engine Name and Governor Model and Serial No.



Should you have lost or damaged this Manual or if you have any question and advice, feel free to contact us or your nearest sales or service asent (shown in the service network list "YANMAR Worldwide Service" appended to the Engine O p e r a t i o n Manual).



Precautions on Safety



1-(



A note prefixed with the



I-[ or



mark in this Manual is a very irnpomt



part of the text particularly in view of safety as it indicates that there is the possibility of resulting in injury or serious damage to the product when an advice on handling or the proper precaution is not followed. 'Thus, be sure to follow such a note.



An item prefixed with the



mark in this Manual is very i m p o m t for handling of a product. A failure to observe



such an item may incur a deterioration of perfomance or a trouble of this product. Therefore, be sure to observe such an item.



An item prefixed with the



mark in this Manual indicates a chapter, section, clause, page or document to be referred



I@ NZ



GOVERNOR



CONTENTS



Page PREFACE ................................................................................................................................................................................ CHAPTER 1 GENERAL DESCRIPTION.................................................................................................................. 1.1 . Specifications of the Governor.......................................................................................................................... 1-2. Hydraulic Oil ..................................................................................................................................................... 3 Cautions on Handling of the Governor ..............................................................................................................



1-1 1-1 1-1



CHAPTER 2. OUTLINE OF CONSTRUCTION........................................................................................................ 2.1 . Function of Major Parts...................................................................................................................................... 2.2 . Operation of the Governor ................................................................................................................................. 2.3 . Speed Droop Adjusting Mechanism ................................................................................................................. 2-4 . Compensator Mechanism ................................................................................................................................



2-1 2-1 2-3 2-4 2-5



.



i



1-1



CHAPTER 3. MAINTENANCE INSPECTION .......................................................................................................... 3-1 3- 1. Daily Inspection ................................................................................................................................................. 3-1 3.2 . Change of Hydraulic Oil .................................................................................................................................... 3-1 3-3. Air Bleeding of Hydraulic Oil Passage .............................................................................................................. 3-2 3-4. Speed Droop Adjustment ................................................................................................................................... 5-3 3.5 . Adjustment of Needle Valve .............................................................................................................................. 3-2 3-6. Cautions in Initial Run ....................................................................................................................................... 3-4 3.7 . Troubleshooting.................................................................................................................................................. 3-6 5 . Criteria on Parts Replacement ............................................................................................................................ 3-8



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CHAPTER 4. REMOTE CONTROLLER .................................... ........................................................................... 4-1 4-1 . Motor Controller................................................................................................................................................. 4-2 . . ..................................................................................................................... 4-4 4-2 . Pneumatic Conuoiler.............. . 4 3 Wire Controller...................................................................................................................................................4-7 CHAPTER 5. DISASSEMBLY & REASSEMBLY OF THE GOVERNOR.......................................................... 5-1 . . 5-1. Cautions m D~sassembly/Reassembly ................................................................................................................ 5-1 5.2 . Development of the Governor............................................................................................................................ 5-2 5.3 . Disassembly of the Governor......................................................................................................................... 5-4 5-9 5-4. Checking of Various Parts................................................................................................................................. 5.5 . Reassembly of the Governor ............................................................................................................................ 5-12 5.6 . Service Data in Servicing ................................................................................................................................. 5-14



.



NZ GOVERNOR



@t



1-1. Specifications of the Governor Specifications of the Models NZ6I & NZ115 Governors are as follows: Governor Model



(A)



Governor controlling force (wok done)



N-m(kgf-m)



Output shaft torque



N-m(kgf-m)



Hydraulic oil pressure



NZ115



NU1



Unit



(B)



9.8 (1.0)



5.9 (0.6) 9.8 (1.0)



11.8 (12)



14.7 (1-5)



1.18(12) ~~a(k~ffcm ~)



1.47(15)



1.47 (IS)



Po\\.er piston diameter (minorlmajor)



mm



Setting speed droop adjustment range



YO



18.6127



17-6/25 0-10



About 5 5



Dry mass (A):for Engine Model 6N160 & 6N165 :.



, FUEL Dir. +



.... ..



200 mm



..-



I



FUEL 1 Graduation



FUEL 2 Graduat~ons



I



I



Fig. 5 2 8 Fig. 3-26 Procedures for Inspecting the Presence or Absence of High-pressure Hydraulic Oil Inflow into the Compensator Case Control Knob



Reading of dial gauge: Within 0.35 rnm



/ -Shift



Fig. 5-27



angle: Within l deg.



NZ Series Hvdraulic Governor Model NZ61lNZ115



SERVICE MANUAL YAMMAR CO.,LTD. 1st Edition: June. 1997 2nd Edition: July. 2002 3rd Edition: July. 2005 Issued by:



Precision Equipment Division Power System Operations Division and Qua l i ty Assurance Dept. Large Power Products Operations Dev i s i on Yanmar Co., Ltd.



Edited by: Yanmar Technical Service Co., Lrd.