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Manuals
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Yanmar Manuals
Engine
4TNV98
Service manual
Yanmar 4TNV98 Service Manual
(4tnv98 : em0q3, em0q4, em0q5); (4tne98 : em0qc, em0qd, em0qe)
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Also See for 4TNV98
:
Service manual
(394 pages)
,
Troubleshooting manual
(235 pages)
,
Operation manual
(164 pages)
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Section 1. General Service Section 2. Periodic Maintenance Information
Important Safety Information
Table of Contents
Component Identification
Emission Control Regulations
Epa / Arb Regulations - Usa Only
Location of Labels
Engine Nameplate (Typical)
Emission Control Labels
Engine Family
Function of Major Engine Components
Function of Cooling System Components
Diesel Fuel
Diesel Fuel Specifications
Filling the Fuel Tank
Priming the Fuel System
Engine Oil
Engine Oil Specifications
Engine Oil Viscosity
Checking Engine Oil
Adding Engine Oil
Engine Oil Capacity (Typical)
Engine Coolant
Engine Coolant Specifications
Filling Radiator with Engine Coolant
Engine Coolant Capacity (Typical)
Description of Model Number
Engine General Specifications
Principal Engine Specifications
Tnv98 Epa Tier
TNE98 EPA Tier 3
Engine Service Standards
Tightening Torques for Standard Bolts and Nuts
Abbreviations and Symbols
Unit Conversions
Units of Torque
Unit Prefixes
Units of Length
Units of Pressure
Units of Volume
Units of Power
Units of Mass
Units of Force
Units of Temperature
Section 2. Periodic Maintenance
Introduction
Performing Periodic Maintenance
Yanmar Replacement Parts
Periodic Maintenance Schedule
Periodic Maintenance Procedures
Daily
After Initial 50 Hours of Operation
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
Introduction
Cylinder Head Specifications
Adjustment Specifications
Intake / Exhaust Valve and Guide Cont
Push Rod
Rocker Arm and Shaft
Valve Spring
Camshaft and Timing Gear Train Specifications
Idler Gear Shaft and Bushing
Timing Gear Backlash
Crankshaft and Piston Specifications
Thrust Bearing
Piston
Connecting Rod
Cylinder Block Specifications
Special Torque Chart
Torque for Bolts and Nuts
Special Service Tools
Measuring Instruments
Cylinder Head
Cylinder Head Components
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
TNE98 Engine
TNV98 Engine
Crankshaft and Camshaft Components
Disassembly of Camshaft and Timing
Disassembly of Engine
Table of Contents
Figure
Components
Disassembly of Crankshaft and Piston
Figure
Figure
Components
Inspection of Crankshaft and Camshaft
Honing and Boring
Components
Reassembly of Crankshaft and Piston
Components
Reassembly of Camshaft and Timing
Final Reassembly of Engine
Before You Begin Servicing
Section 4. Fuel System
Method B : Use a Feeler Gauge to Measure the
See Thrust Bearing on Page 70 for the Service
Tnv98 Engine
Cold Start Device
Stop Solenoid
Trochoid Fuel Pump
Fuel System Specifications
Test and Adjustment Specifications
Special Service Tools
Fuel System Diagram
Fuel System Components
Valve Cylinder Head
Fuel Injection Pump
Removal of Fuel Injection Pump
Installation of Fuel Injection Pump
Checking and Adjusting Fuel Injection Timing
Determining Fuel Injection Timing Specification
Checking Fuel Injection Timing
Adjusting Fuel Injection Timing
Fuel Injectors
Removal of Fuel Injectors
Testing of Fuel Injectors
Injectors
Adjusting Fuel Injector Pressure
Installation of the Fuel Injectors
Reassembly of Fuel Injectors
Fuel System Special Torque Chart
Tne98 Engine
Fuel System Components
Fuel System Components
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
Structure and Operation of Timer
Magnetic Valve (Stop Solenoid)
Removal of Fuel Injection Pump
Table of Contents
Figure
Installation of the Fuel Injection Pump
Checking / Adjustment of Fuel Injection Timing
Caution
Servicing the Fuel Injectors
Removal of the Fuel Injectors
Judgement Criteria on Atomization Condition
Installation of Fuel Injectors
Section 5. Cooling System
Before You Begin Servicing
Carefully Rotate the Alternator Toward the Cylinder Block While Loosening the V-Belt
Failure to Comply May Result in Minor or
Moderate Injury
Pinch Hazard
Figure
Cooling System Diagram
Introduction
Engine Coolant Pump Components
Figure
Engine Coolant Pump
Engine Coolant System Check
Removal of Engine Coolant Pump
Disassembly of Engine Coolant Pump
Installation of Engine Coolant Pump
Reassembly of Engine Coolant Pump
Before You Begin Servicing
Section 6. Lubrication System
Introduction
Oil Pump Service Information
Lubrication System Diagram
Checking Engine Oil Pressure
Trochoid Oil Pump
Oil Pump Components
Disassembly of Oil Pump
Reassembly of Oil Pump
Before You Begin Servicing
Section 7. Starter Motor
Introduction
Starter Motor Information
Starter Motor Specifications
Starter Motor Troubleshooting
Starter Motor Components
Starter Motor
Disassembly of Starter Motor
Removal of Starter Motor
Cleaning and Inspection
Reassembly of Starter Motor
Check Pinion Projection Length
Installation of Starter Motor
No-Load Test
Special Service Tools
Section 8. Troubleshooting
Compression Pressure Measurement
Troubleshooting by Measuring Compression Pressure
Quick Reference Table for Troubleshooting
Troubleshooting Charts
Wiring Diagram
Advertisement
Quick Links
1
Tightening Torques for Standard Bolts and Nuts
2
Measuring/Adjusting Valve Clearance
3
Installation of Fuel Injection Pump
4
Checking Fuel Injection Timing
Download this manual
See also:
Troubleshooting Manual
,
Operating Manual
Service Manual
4TNV98 & 4TNE98 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
Table of
Contents
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Advertisement
Chapters
Section 1. General Service Section 2. Periodic Maintenance Information
5
Table of Contents
116
Table of Contents
192
Table of Contents
Troubleshooting
Starter Motor Troubleshooting
225
Special Service Tools
237
Troubleshooting By Measuring Compression Pressure
238
Quick Reference Table For Troubleshooting
241
Troubleshooting Charts
242
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This manual is also suitable for:
4tne98
D20s-5
D25s-5
D30s-5
D33s-5
D35c-5
...
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D20g
D25g
D30g
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