Overview
The Komatsu PC138US-8, PC138USLC-8 excavator repair service manual provides a technical reference for the covered equipment. Its purpose is to help locate information relevant to inspection, troubleshooting, servicing and repair, as applicable to the supplied publication.
The documented contents outline identifies manuals: shop manual, 00 index and foreword, 01 specification and 10 structure, function and maintenance standard. The table below lists selected source-supported subjects; consult the publication for exact service procedures and specifications.
Important Information: Confirm the applicable serial-number or production range in the supplied documentation before selecting a procedure.
Table of Contents
Komatsu PC138US-8, PC138USLC-8 Manual
Main sections and selected subjects identified in the source documentation:
- Manuals: Shop Manual
- 00 Index and foreword
- 01 Specification
- 10 Structure, function and maintenance standard
- 20 Standard value table
- 40 Troubleshooting
- 50 Disassembly and assembly
- 90 Diagrams and drawings
- GENERAL
- STRUCTURE, FUNCTION AND MAINTENANCE STANDARD
- TESTING, ADJUSTING AND TROUBLESHOOTING
- DISASSEMBLY AND ASSEMBLY KOMATSU Excavator PC138US-8, PC138USLC-8
- When raising heavy components, use a hoist or crane. Check that the wire rope, chains and hooks are free from damage.
- Failure code [DAF8KB] Short circuit in camera power supply
- Content of Trouble : Output power supply voltage (Rating: 8 V) from machine monitor to camera is below 6.0 V or above
- 10 V.
- Action of
- Machine monitor
Serial-Number Applicability
The covered production ranges or serial groups may affect the applicable procedures. Check the identification details on the machine against the source documentation.










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