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140-3 Series
Shop manual
Komatsu 140-3 Series Shop Manual
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
General
Outline
Specifications
Overall Drawing
Weight Table
Engine Performance Curve
Structure and Function, Maintenance Standard
11 Structure and Function
Maintenance Standard
Intake, Exhaust Equipment
Air Cleaner
Turbocharger
Aftercooler
Cylinder Head
Cylinder Block
Cylinder Liner
Main Moving Parts
Crankshaft
Camshaft
Cam Follower and Push Rod
Piston Piston Ring Piston Pin
Connecting Rod
Flywheel, Flywheel Housing
Vibration Damper
Timing Gear
Valve System
Valve, Valve Guide
Rocker Arm and Shaft
Crosshead and Guide
Lubrication System
Lubrication System Diagram
Oil Pump
Oil Filter
Oil Cooler
Fuel System
Fuel System Diagram
Outline of Cri System
Fuel Piping
Fuel Cooler
Fuel Filter
Cooling System Diagram
Water Pump
Thermostat
Corrosion Resistor
Cooling Fan Drive
Front Pto
Air Compressor
Exhaust Brake
Alternator
Starting Motor
Starting Aid
Testing and Adjusting
Standard Value Table for Testing, Adjusting, and Troubleshooting
Standard Value Table for Electrical Related Parts
Tools for Testing, Adjusting, and Troubleshooting
Measuring Exhaust Temperature
Measuring Intake Air Pressure (Boost Pressure)
Adjusting Valve Clearance
Measuring Compression Pressure
Measuring Blow-By Pressure
Handling Equipment in Fuel Circuit
Measuring Oil Pressure
Measuring Fuel Pressure
Releasing Remaining Pressure in Fuel System
Reduced Cylinder Mode Operation
Bleeding Air from Fuel System
Check for Leakage in Fuel System
Adjusting Speed Sensor
Testing and Adjusting Alternator Belt Tension
Testing and Adjusting Fan Belt Tension
Handling Controller High Voltage Circuit
Run-In Standard
Performance Test Standards
Troubleshooting of Engine System (S Mode)
Points to Remember When Troubleshooting
Method of Using Troubleshooting Charts
Starting Performance Is Poor (Starting Always Takes Time)
S-2 Engine Does Not Start
Engine Does Not Pick up Smoothly (Follow-Up Is Poor)
S-4 Engine Stops During Operations
Engine Does Not Rotate Smoothly (Hunting)
Engine Lacks Output (or Lacks Power)
Exhaust Smoke Is Black (Incomplete Combustion)
Oil Consumption Is Excessive (or Exhaust Smoke Is Blue)
S-9 Oil Becomes Contaminated Quickly
S-10 Fuel Consumption Is Excessive
Oil Is in Cooling Water (or Water Spurts Back, or Water Level Goes Down)
Oil Pressure Caution Lamp Lights up (Drop in Oil Pressure)
Oil Level Rises (Water, Fuel in Oil)
Water Temperature Becomes too High (Overheating)
S-15 Abnormal Noise Is Made
S-16 Vibration Is Excessive
Troubleshooting of Electrical System (E Mode)
Points to Remember When Troubleshooting
Method of Using Troubleshooting Flowchart
Error Code Displays and Points to Remember When Troubleshooting
Action Taken by Controller and Condition of Machine When Error Code Is Displayed
Error Code [E-1B] [Abnormality in NE Revolution Sensor System]
Error Code [E-1C] [Abnormality in G Revolution Sensor System]
Error Code [E-20] [Abnormality in Model Selection System]
Error Code [E-22] [Overrun]
Error Code [E-23] [Overheat]
Error Code [E-24] [Drop in Oil Pressure]
Error Code [E-30] [Abnormality in Idling Validation Signal System]
Error Code [E-31] [Abnormality in Throttle Sensor System]
Error Code [E-34] [Abnormality in Water Temperature High-Temperature Sensor System]
Error Code [E-36] [Abnormality in Oil Pressure Switch System]
Error Code [E-3C] [Abnormality in Boost Pressure Sensor System]
Error Code [E-3D] [Abnormality in Fuel Temperature Sensor System]
Error Code [E-50] [Abnormality in Preheating Relay Connecting Point System]
Error Code [E-51] [Abnormality in Preheat Relay Coil System]
Error Code [E-54] [Short Circuit in Starting Switch C System]
Error Code [E-56] [Power Source System Abnormality 1]
Error Code [E-57] [Power Source System Abnormality 2]
Error Code [E-5A] [Abnormality in Fuel Injection Quantity Control Switch Signal]
Error Code [E-6A] [Abnormality in Water Temperature Low-Temperature Sensor System]
Error Code [E-70] [Excess Current in Fuel Supply Pump PCV1 System]
Error Code [E-71] [Excess Current in Fuel Supply Pump PCV2 System]
Error Code [E-74] [Disconnection in Fuel Supply Pump PCV1 System]
Error Code [E-75] [Disconnection in Fuel Supply Pump PCV2 System]
Error Code [E-77] [Abnormality in Common Rail Fuel Pressure Sensor System]
Error Code [E-79] [Common Rail Fuel High Pressure Abnormality 1] Error Code [E-7A] [Common Rail Fuel High Pressure Abnormality 2]
Error Code [E-7B] [Fuel Supply Pump Non-Force Feed 1] Error Code [E-7C] [Fuel Supply Pump Non-Force Feed 2]
Error Code [E-7D] [Abnormality in Common Rail Fuel Pressure]
Error Code [E-80] [Defective Controller]
Error Code [E-81] [Disconnection in No. 1 Fuel Injector System]
Error Code [E-82] [Disconnection in No. 2 Fuel Injector System]
Error Code [E-83] [Disconnection in No. 3 Fuel Injector System]
Error Code [E-84] [Disconnection in No. 4 Fuel Injector System]
Error Code [E-85] [Disconnection in No. 5 Fuel Injector System]
Error Code [E-86] [Disconnection in No. 6 Fuel Injector System]
Error Code [E-8A] [Short Circuit in No. 1, No. 2, No. 3 Fuel Injector System]
Error Code [E-8B] [Short Circuit in No. 4, No. 5, No. 6 Fuel Injector System]
Disassembly and Assembly
Disassembly and Assembly
Method of Using Manual
Precautions When Carrying out Operation
Special Tool List
General Disassembly of Engine
General Assembly of Engine
Procedure for Removing and Installing Fuel Supply Pump Unit
Repair and Replacement of Parts
Cylinder Head
Grinding of Fitting Face of Cylinder Head
Replacing Valve Seat Insert
Pressure Test
Replacing Valve Guide
Replacing Crosshead Guide
Grinding Valve
Replacing Cam Bushing
Replacing Crankshaft Gear
Replacing Cam Gear
Replacing Flywheel Ring Gear
Replacing Connecting Rod Small End Bushing
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SEBM022209
DIESEL ENGINE
© 2003
All Rights Reserved
Printed in Japan 11-03 (01)
00-1
(9)
Table of
Contents
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Chapters
Table of Contents
2
General
27
Structure and Function, Maintenance Standard
59
Testing and Adjusting
185
Troubleshooting of Engine System (S Mode)
219
Troubleshooting of Electrical System (E Mode)
243
Disassembly and Assembly
303
Table of Contents
Troubleshooting
STANDARD VALUE TABLE FOR TESTING, ADJUSTING, AND TROUBLESHOOTING
186
TOOLS FOR TESTING, ADJUSTING, AND TROUBLESHOOTING
194
POINTS TO REMEMBER WHEN TROUBLESHOOTING
220
METHOD OF USING TROUBLESHOOTING CHARTS
221
POINTS TO REMEMBER WHEN TROUBLESHOOTING
245
METHOD OF USING TROUBLESHOOTING FLOWCHART
246
ERROR CODE DISPLAYS AND POINTS TO REMEMBER WHEN TROUBLESHOOTING
247
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This manual is also suitable for:
Sa6d140e-3
Saa6d140e-3
Sda6d140e-3
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