Komatsu PC490-11E0 PC490LC-11E0 PC490HRD-11E0 Hydraulic Excavator Service Manual (UENBM00751)

Index and Foreword
Index
Abbreviation List
Foreword, Safety, Basic Information
 Specifications
Table of Contents
Abbreviation List
Specifications
Specifications: PCHRD-E
Specifications: PCHRD-E K
 Structure and Function
Table of Contents
Abbreviation List
Urea SCR System
Boot-up System
Engine System
Cooling System
Control System
Hydraulic System
Hydraulic System (PCHRD-E)
Work Equipment System
Work Equipment System: PCHRD-E
Swing System
Travel System
Undercarriage and Frame
Work Equipment
CAB Related Parts
Control System
Hydraulic System (PCHRD-E K)
LS Override Valve
Hydraulic Lock Valve
Swing Lock Valve
Boom RAISE Lock Valve
Depressurisation Valve
Mechanical Pin Lock/Unlock Valve
Pressure Intensifier System
Automatic Grease System (PCHRD-E K)
 Standard Value Table
Table of Contents
Abbreviation List
Standard Value Table for Engine
Standard Value Table for Machine
Standard Value Table for Machine – PCHRD-E
Standard Value Table for Machine – PCHRD-E K
Standard Value Table for Electricity
 Testing and Adjusting
Table of Contents
Abbreviation List
Related Information on Testing and Adjusting
Engine and Cooling System
Power Train
Undercarriage and Frame
Hydraulic System
Hydraulic System (PCHRD-E)
Hydraulic System (PCHRD-E K Boom Change System)
Dust Suppression System Pressure and Flow Adjustment (PCHRD-E)
CAB Related Parts
Electrical System
Electrical System (PCHRD-E)
Electrical System (PCHRD-E K Boom Change System)
Pm Clinic
Working Range Indicator System
Automatic Grease System (PCHRD-E)
 Troubleshooting
Table of Contents
Abbreviation List
Related Information to Troubleshooting
Troubleshooting by Failure Code (Display of Code)
Troubleshooting of Electrical System (E-Mode)
Troubleshooting for Hydraulic and Mechanical Systems (H Mode)
Troubleshooting of Engine (S-Mode)
Troubleshooting of Working Range Indicator by Failure Code (if Equipped)
Failure Code Table
Procedure for Troubleshooting for K Boom Change System
Troubleshooting by Failure Code (Display of Code)
Troubleshooting of Automatic Grease System (PCHRD-E)
 Disassembly and Assembly
Table of Contents
Abbreviation List
Related Information on Disassembly and Assembly
Engine and Cooling System
Power Train
Undercarriage and Frame
Hydraulic System
Work Equipment
CAB Related Parts
Electrical System
 Maintenance Standard
Table of Contents
Abbreviation List
Engine and Cooling System
Power Train
Undercarriage and Frame
Hydraulic System
Work Equipment
Work Equipment: PCHRD-E
PCHRD-E K Boom Change System
 Appendix
Table of Contents
Abbreviation List
Air Conditioner System
Component Parts of Air Conditioner System
Explanation of Procedure for Test of and Troubleshooting of Air Conditioner
Circuit Diagram and Configuration of Connector Pins of Air Conditioner
System Diagram of Air Conditioner
Locations of Air Conditioner Parts and Layout of Connectors
Examine Air Leakage (Duct)
Examine Air Conditioner with Self-Diagnosis Function
Open the Electrical System Abnormality Record Screen in Service Mode of Machine Monitor
Examine Vent (Mode) Changeover
Examine Fresh/Recirc Air Changeover
Examine Sunlight Sensor
Examine Refrigerant (Dual) Pressure Switch
Examine Relay
Air Conditioner Troubleshooting Chart 
Air Conditioner Troubleshooting Chart 
Information Shown in Troubleshooting Table
Failure Code [AKA]
Failure Code [AKB]
Failure Code [BKA]
Failure Code [BKB]
Failure Code [CKA]
Failure Code [CKB]
Failure Code [DKZ]
Failure Code [EMC]
Failure Code [FMC]
Failure Code [GKX]
A- Troubleshooting for Power Supply System (Air Conditioner Does Not Operate)
A- Troubleshooting for Compressor and Refrigerant System (Air is Not Cooled)
A- Troubleshooting for Blower Motor System (No Air Comes Out or Air Flow is Abnormal)
A- Troubleshooting for FRESH/RECIRC Air Changeover
Troubleshooting by Gauge Pressure
Connect Service Tool
Precautions for Disconnection and Connection of Air Conditioner Piping
Handle Compressor Oil
PCHRD-E K Boom Change System
 Circuit Diagrams
Table of Contents
Abbreviation List
Hydraulic Circuit Diagram (PC)
Hydraulic Circuit Diagram (PCHRD)
Electrical Circuit Diagram (PC)
Electrical Circuit Diagram (PCHRD)
Automatic Grease System Diagram(PCHRD)
Index

Pages: 3460
Language: English
Format: PDF

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