Overview
The Komatsu PC50UU-1 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 supplied contents outline identifies 1001 and up (SEBM020U0104), 3401 and up (SEAMO20U0101), Manuals and 01 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01-1. The table below follows the provided section names and selected topics; consult the manual for the exact 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 PC50UU-1 Manual
Main sections and selected subjects identified in the source documentation:
- 1001 and up (SEBM020U0104)
- 3401 and up (SEAMO20U0101)
- Manuals: Shop Manual and Operation and Maintenance Manual
- 01 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01-1
- 10 STRUCTURE AND FUNCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
- 20 TESTING, ADJUSTING AND TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-1
- 30 DISASSEMBLY AND ASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-1
- 40 MAINTENANCE STANDARDS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90-1
- GENERAL
- STRUCTURE, FUNCTION AND MAINTENANCE STANDARD
- TESTING, ADJUSTING AND TROUBLESHOOTING
- DISASSEMBLY AND ASSEMBLY KOMATSU
- When raising heavy components, use a hoist or crane. Check that the wire rope, chains and hooks are free from damage.
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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