Yuchai YC4D85Z-D20 User Manual

Name: Yuchai YC4D85Z-D20
Brand: Yuchai
Rating: 4 (1 reviews)

53 pages

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YC4D60-D21 /YC4D85Z-D20

YC4D60-D21 /YC4D85Z-D20 SERIES DIESEL ENGINE GENERATOR

OPERATION & MAINTENANCE MANUAL

Guangxi Yuchai Machinery Co., Ltd

Cautions on Safe Driving2
Contents6
Table of Contents7
Engine Specifications and Accessories8
Technical Data of Adjustment and Control for Engine10
Tightening Torques of the Connecting Screw Thread11
Main Parts Fit Clearances12
Charter Two Main Installing Requirements16
Installation of the Crankshaft16
Installations of the Piston and the Connecting Rod16
Installation of the Camshaft17
Installation of the Valves and Valve Guides17
Installation of the Cylinder Head18
Installation of the Gear Train18
Installation of the Injectors18
Charter Three Engine Adjustments19
Fuel Supply Advance Angle Adjustment19
Adjustment of the Valve Clearance20
Fuel Supply Advance Angle Adjustment20
Fuel Injection Pressure Adjustments21
Fuel Injection Pressure Adjustment22
Oil Pressure Adjustment22
Fuel23
Oil23
Operation of Diesel Engine23
Selection of Fuel, Lubricating Oil and Coolant23
Preparations before Starting the Diesel Engine24
Check Following Items after Start25
Procedures of Starting the Diesel Engine25
Starting the Diesel Engine25
Requirements of Using Engine26
Break-In of the Diesel Engine27
Charter Diesel Engine Maintenance27
Special Attentions During Break-In Period27
Stopping the Diesel Engine27
Requirements of Technical Maintenance28
De-Aerate the Fuel in the Fuel Pipe30
M a I N T E N a N C E M E T H O D30
- Maintenance Methods30
- Check and Adjust the Belt Tension31
- Clean the Inlet Screen of the Oil Pump31
- Discharge the Coolant31
- Add Lubricating Grease32
- Clean the Air Cleaner32
- Scrub the Water Deposit off33
C H a R T E R 6 N O R M a L T R O U B L E a N D T R O U B L E S H O O T I N34
- D I E S E L E N G I N E C a N N O T S T a R T O R S T a R T D I F F I C U L T L34
- Insufficient Power Output35
- I N S U F F I C I E N T P O W E R O U T P U35
- Abnormal Noise During Engine Operation37
- A B N O R M a L N O I S E D U R I N G E N G I N E O P E R a T I O37
- Exhaust with Abnormal Smoke Color38
- Too Low Oil Pressure39
- Too High Oil Pressure, Much Diluted Oil, Excessive Oil Consumption40
- Too High Water Outlet Temperature41
- Diesel Engine Can Not Start or Start Difficultly34
- Normal Trouble and Troubleshooting34
A N N E X : a N T I - F R E E Z E S O L U T I O N a N D I T S a P P L I C a T I O N G U I D47
- Physical and Chemical Property of Glycol48
- Anti-Corrosion49
- Anti Cavitations50
- Anti-Scaling Character50
- High Boiling Point Character50
- Principles of Selecting Anti-Freeze Solution51
- How to Use Anti-Freeze Solution Correctly?52

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Yuchai YC4D85Z-D20 Specifications

General

Engine Model	YC4D85Z-D20
Rated Speed	1500 rpm
Cooling System	Water-cooled
Aspiration	Turbocharged
Engine Type	4-Cylinder, In-line, Water-cooled
Starting System	Electric start

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53 pages

Yuchai YC4D85Z-D20 User Manual

Table of Contents

Questions and Answers:

Yuchai YC4D85Z-D20 Specifications

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