Komatsu Hydraulic Excavator PC238USLC-11 SN 5001+ Shop Manual PDF

The Komatsu PC238USLC-11 Shop Manual (SEN06635-02) is a factory service and repair guide created for technicians, mechanics, equipment owners, and maintenance personnel working with Komatsu hydraulic excavators. This manual covers machines with serial numbers 5001 and up and provides detailed information required for inspection, troubleshooting, maintenance, and complete repair procedures.

Unlike a basic operator's manual, this workshop guide goes deep into the machine's systems and components. It explains how individual systems function, provides testing and adjustment procedures, includes standard values and specifications, and contains complete disassembly and assembly instructions. Detailed illustrations, diagrams, and troubleshooting charts help simplify diagnostics and reduce repair time.

The manual covers engine systems, hydraulic components, cooling systems, travel and swing mechanisms, undercarriage assemblies, electrical systems, cab components, work equipment, air conditioning systems, and much more. Factory troubleshooting procedures and circuit diagrams make it easier to identify faults and perform repairs according to manufacturer recommendations.

The PDF format allows quick navigation and keyword searching, making it easy to locate specific procedures, specifications, or component information when working in the workshop or in the field.

Item Details

• Manufacturer: Komatsu
• Model: PC238USLC-11 Hydraulic Excavator
• Document Type: Shop Manual
• Publication Number: SEN06635-02
• Language: English
• Format: PDF
• Pages: 2835
• Serial Numbers: 5001 and up
• Searchable: Yes

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Table of Contents

• COVER
• 00 INDEX AND FOREWORD
  • INDEX
  • ABBREVIATION LIST
  • FOREWORD, SAFETY, BASIC INFORMATION
• 01 SPECIFICATIONS
  • CONTENTS
  • ABBREVIATION LIST
  • SPECIFICATIONS
• 10 STRUCTURE AND FUNCTION
  • CONTENTS
  • ABBREVIATION LIST
  • UREA SCR SYSTEM
  • BOOT-UP SYSTEM
  • ENGINE SYSTEM
  • COOLING SYSTEM
  • CONTROL SYSTEM
  • HYDRAULIC SYSTEM
  • WORK EQUIPMENT SYSTEM
  • SWING SYSTEM
  • TRAVEL SYSTEM
  • UNDERCARRIAGE AND FRAME
  • WORK EQUIPMENT
  • CAB AND ITS ATTACHMENTS
• 20 STANDARD VALUE TABLE
  • CONTENTS
  • ABBREVIATION LIST
  • STANDARD VALUE TABLE FOR ENGINE
  • STANDARD VALUE TABLE FOR MACHINE
• 30 TESTING AND ADJUSTING
  • CONTENTS
  • ABBREVIATION LIST
  • RELATED INFORMATION ON TESTING AND ADJUSTING
  • ENGINE AND COOLING SYSTEM
  • POWER TRAIN
  • UNDERCARRIAGE AND FRAME
  • HYDRAULIC SYSTEM
  • WORK EQUIPMENT
  • CAB AND ITS ATTACHMENTS
  • ELECTRICAL SYSTEM
  • Pm CLINIC
• 40 TROUBLESHOOTING
  • CONTENTS
  • ABBREVIATION LIST
  • RELATED INFORMATION ON 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)
• 50 DISASSEMBLY AND ASSEMBLY
  • CONTENTS
  • ABBREVIATION LIST
  • RELATED INFORMATION ON DISASSEMBLY AND ASSEMBLY
  • ENGINE AND COOLING SYSTEM
  • POWER TRAIN
  • UNDERCARRIAGE AND FRAME
  • HYDRAULIC SYSTEM
  • WORK EQUIPMENT
  • CAB AND ITS ATTACHMENTS
  • ELECTRICAL SYSTEM
• 60 MAINTENANCE STANDARD
  • CONTENTS
  • ABBREVIATION LIST
  • ENGINE AND COOLING SYSTEM
  • POWER TRAIN
  • UNDERCARRIAGE AND FRAME
  • HYDRAULIC SYSTEM
  • WORK EQUIPMENT
• 80 APPENDIX
  • CONTENTS
  • ABBREVIATION LIST
  • AIR CONDITIONER SYSTEM
  • COMPONENT PARTS OF AIR CONDITIONER SYSTEM
  • EXPLANATION OF PROCEDURE FOR TESTING AND TROUBLESHOOTING OF AIR CONDITIONER
  • CIRCUIT DIAGRAM AND ARRANGEMENT OF CONNECTOR PINS FOR AIR CONDITIONER
  • AIR CONDITIONER SYSTEM DIAGRAM
  • INSTALLATION LOCATIONS OF AIR CONDITIONER PARTS AND ARRANGEMENT OF CONNECTORS
  • TESTING AIR LEAKAGE (DUCT)
  • TESTING AIR CONDITIONER USING SELF-DIAGNOSIS FUNCTION
  • HOW TO OPEN THE ELECTRICAL SYSTEM ABNORMALITY RECORD SCREEN IN SERVICE MODE OF THE MACHINE MONITOR
  • TEST VENT (MODE) CHANGEOVER
  • TESTING FRESH/RECIRC AIR CHANGEOVER
  • TEST SUNLIGHT SENSOR
  • TEST (DUAL) PRESSURE SWITCH FOR REFRIGERANT
  • TEST RELAYS
  • AIR CONDITIONER TROUBLESHOOTING CHART 1
  • AIR CONDITIONER TROUBLESHOOTING CHART 2
  • INFORMATION DESCRIBED IN TROUBLESHOOTING TABLE
  • FAILURE CODE [879AKA]
  • FAILURE CODE [879AKB]
  • FAILURE CODE [879BKA]
  • FAILURE CODE [879BKB]
  • FAILURE CODE [879CKA]
  • FAILURE CODE [879CKB]
  • FAILURE CODE [879DKZ]
  • FAILURE CODE [879EMC]
  • FAILURE CODE [879FMC]
  • FAILURE CODE [879GKX]
• 90 CIRCUIT DIAGRAMS
  • CONTENTS
  • ABBREVIATION LIST
  • HYDRAULIC CIRCUIT DIAGRAM
  • ELECTRICAL CIRCUIT DIAGRAM
• INDEX

References

The Komatsu Hydraulic Excavator OEM manual was used to prepare this description.