Komatsu PC238USLC-11 Hydraulic Excavator Shop Manual SEN06635-16

Description

• Model List:
  • PC238USLC-11 Hydraulic Excavator

• 1. Cover
• 1.1. Index and Foreword
• 1.1.1. Index
• 1.1.2. Abbreviation List
• 1.1.3. Foreword, Safety, Basic Information
• 1.2. Specifications
• 1.2.1. Table of Contents
• 1.2.2. Specifications
• 1.3. Structure and Function
• 1.3.1. Table of Contents
• 1.3.2. Urea SCR System
• 1.3.3. Bootup System
• 1.3.4. Engine System
• 1.3.5. Cooling System
• 1.3.6. Control System
• 1.3.7. Hydraulic System
• 1.3.8. Work Equipment System
• 1.3.9. Swing System
• 1.3.10. Travel System
• 1.3.11. Undercarriage and Frame
• 1.3.12. Work Equipment
• 1.3.13. CAB Related Parts
• 1.4. Standard Value Table
• 1.4.1. Table of Contents
• 1.4.2. Standard Value Table for Engine
• 1.4.3. Standard Value Table for Machine
• 1.5. Testing and Adjusting
• 1.5.1. Table of Contents
• 1.5.2. Precautions Before Work
• 1.5.3. Related Information on Testing and Adjusting
• 1.5.4. Engine and Cooling System
• 1.5.5. Power Train
• 1.5.6. Undercarriage and Frame
• 1.5.7. Hydraulic System
• 1.5.8. Work Equipment
• 1.5.9. CAB Related Parts
• 1.5.10. Electrical System
• 1.5.11. Pm Clinic
• 1.6. Troubleshooting
• 1.6.1. Table of Contents
• 1.6.2. Precautions Before Work
• 1.6.3. Related Information to Troubleshooting
• 1.6.4. Troubleshooting by Failure Code (Display of Code)
• 1.6.5. Troubleshooting of Electrical System (EMode)
• 1.6.6. Troubleshooting for Hydraulic and Mechanical Systems (H Mode)
• 1.6.7. Troubleshooting of Engine (SMode)
• 1.7. Disassembly and Assembly
• 1.7.1. Table of Contents
• 1.7.2. Precautions Before Work
• 1.7.3. Related Information on Disassembly and Assembly
• 1.7.4. Engine and Cooling System
• 1.7.5. Power Train
• 1.7.6. Undercarriage and Frame
• 1.7.7. Hydraulic System
• 1.7.8. Work Equipment
• 1.7.9. CAB Related Parts
• 1.7.10. Electrical System
• 1.8. Maintenance Standard
• 1.8.1. Table of Contents
• 1.8.2. Engine and Cooling System
• 1.8.3. Power Train
• 1.8.4. Undercarriage and Frame
• 1.8.5. Hydraulic System
• 1.8.6. Work Equipment
• 1.9. Appendix
• 1.9.1. Table of Contents
• 1.9.2. Precautions Before Work
• 1.9.3. Air Conditioner System
• 1.9.4. Component Parts of Air Conditioner System
• 1.9.5. Explanation of Procedure for Test of and Troubleshooting of Air Conditioner
• 1.9.6. Circuit Diagram and Configuration of Connector Pins of Air Conditioner
• 1.9.7. System Diagram of Air Conditioner
• 1.9.8. Locations of Air Conditioner Parts and Layout of Connectors
• 1.9.9. Examine Air Leakage (Duct)
• 1.9.10. Examine Air Conditioner with SelfDiagnosis Function
• 1.9.11. Open the Electrical System Abnormality Record Screen in Service Mode of Machine Monitor
• 1.9.12. Examine Vent (Mode) Changeover
• 1.9.13. Examine Fresh/Recirc Air Changeover
• 1.9.14. Examine Sunlight Sensor
• 1.9.15. Examine Refrigerant (Dual) Pressure Switch
• 1.9.16. Examine Relay
• 1.9.17. Air Conditioner Troubleshooting Chart 1
• 1.9.18. Air Conditioner Troubleshooting Chart 2
• 1.9.19. Information Shown in Troubleshooting Table
• 1.9.20. Failure Code 879AKA
• 1.9.21. Failure Code 879AKB
• 1.9.22. Failure Code 879BKA
• 1.9.23. Failure Code 879BKB
• 1.9.24. Failure Code 879CKA
• 1.9.25. Failure Code 879CKB
• 1.9.26. Failure Code 879DKZ
• 1.9.27. Failure Code 879EMC
• 1.9.28. Failure Code 879FMC
• 1.9.29. Failure Code 879GKX
• 1.9.30. A1 Troubleshooting for Power Supply System (Air Conditioner Does Not Operate)
• 1.9.31. A2 Troubleshooting for Compressor and Refrigerant System (Air is Not Cooled)
• 1.9.32. A3 Troubleshooting for Blower Motor System (No Air Comes Out or Air Flow is Abnormal)
• 1.9.33. A4 Troubleshooting for Fresh/Recirc Air Changeover
• 1.9.34. Troubleshooting by Gauge Pressure
• 1.9.35. Connect Service Tool
• 1.9.36. Precautions for Disconnection and Connection of Air Conditioner Piping
• 1.9.37. Handle Compressor Oil
• 1.9.38. How to Replace Desiccant
• 1.10. Circuit Diagrams
• 1.10.1. Table of Contents
• 1.10.2. Hydraulic Circuit Diagram
• 1.10.3. Electrical Circuit Diagram
• 1.11. Index