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4TNE98
Yanmar 4TNV98 Service Manual
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Yanmar 4TNV98 Service Manual
Table of content
Contents
important safety information
Table Of Contents
Table Of Contents
Table Of Contents
Component Identification
Location of Labels
Emission Control Labels
Function of Major Engine Components
Function of Cooling System Components
Diesel Fuel
Filling The Fuel Tank
Priming the Fuel System
Engine Oil
Checking Engine Oil
Engine Coolant
Engine Coolant Specifications
Engine Coolant Capacity (Typical)
Engine General Specifications
Principal Engine Specifications
TNE98 EPA Tier 3
Engine Service Standards
Tightening Torques for Standard Bolts and Nuts
Abbreviations and Symbols
Unit Conversions
section 2. periodic maintenance
Introduction
Periodic Maintenance Schedule
Periodic Maintenance Procedures
Daily
Every 50 Hours of Operation
Every 250 Hours of Operation
Every 500 Hours of Operation
Every 1000 Hours of Operation
Every 1500 Hours of Operation
Every 2000 Hours of Operation
Before You Begin Servicing
Intake / Exhaust Valve and Guide Cont
Push Rod
Idler Gear Shaft and Bushing
Crankshaft and Piston Specifications
Piston
Connecting Rod
Cylinder Block Specifications
Special Service Tools
Measuring Instruments
Cylinder Head
Disassembly of 4-Valve Cylinder Head
TNE98 Engine
Disassembly of Cylinder Head
Cleaning of Cylinder Head Components
reassembly of cylinder head
Measuring and Adjusting Valve Clearance
TNV98 Engine
Crankshaft and Camshaft Components
Disassembly of Engine
Components
Honing and Boring
Final Reassembly of Engine
Stop Solenoid
Fuel System Specifications
Test and Adjustment Specifications
Fuel System Diagram
Fuel System Components
Fuel Injection Pump
Installation of Fuel Injection Pump
Checking and Adjusting Fuel Injection Timing
Checking Fuel Injection Timing
Adjusting Fuel Injection Timing
Fuel Injectors
Testing of Fuel Injectors
Injectors
Adjusting Fuel Injector Pressure
Reassembly of Fuel Injectors
Pump
Overview
Plunger Operation
Process
Fuel Injection Volume Adjustment Mechanism
Delivery Valve Assembly
All - Speed Governor
At Start of Engine
During Idling
At Full-Load Maximum Speed Control
At No-Load Maximum Speed Control
Standard Type Automatic Timer
Magnetic Valve (Stop Solenoid)
Removal Of Fuel Injection Pump
Installation Of The Fuel Injection Pump
Checking / Adjustment Of Fuel Injection Timing
Servicing The Fuel Injectors
Judgement Criteria on Atomization Condition
Installation of Fuel Injectors
Engine Coolant Pump Components
Engine Coolant System Check
Disassembly of Engine Coolant Pump
Reassembly of Engine Coolant Pump
Lubrication System Diagram
Checking Engine Oil Pressure
Disassembly of Oil Pump
Reassembly of Oil Pump
Starter Motor Specifications
Starter Motor Troubleshooting
Starter Motor Components
Starter Motor
Cleaning and Inspection
Reassembly of Starter Motor
Check Pinion Projection Length
No-Load Test
Troubleshooting By Measuring Compression Pressure
Quick Reference Table For Troubleshooting
Troubleshooting Charts
Wiring Diagram
Service Manual
4
TNV
98
&
4
TNE
98
Diesel Engine
D20S-5, D25S-5, D30S-5, D33S-5, D35C-5
(4TNV98 : EM0Q3, EM0Q4, EM0Q5)
D20S-5, D25S-5, D30S-5, D33S-5, D35C-5
(4TNE98 : EM0QC, EM0QD, EM0QE)
D20G, D25G, D30G
(4TNE98)
SB4319E00
Jan.
2008
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This manual is suitable for:
4TNE98
4TNV98
D20G
D20S-5
D25G
D25S-5
D30G
D30S-5
D33S-5
D35C-5
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