Overview
The Komatsu PC100-6, PC120-6, PC120LC-6, PC130-6 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 pc100l-6: 15200 and up, pc120lc-6: 65504 and up, manuals: shop manual and 01 general. 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 PC100-6, PC120-6, PC120LC-6, PC130-6 Manual
Main sections and selected subjects identified in the source documentation:
- PC100L-6: 15200 and up
- PC120LC-6: 65504 and up
- Manuals: Shop Manual
- 01 GENERAL
- 10 STRUCTURE AND FUNCTION
- 20 TESTING AND ADJUSTING
- 30 DISASSEMBLY AND ASSEMBLY
- 40 MAINTENANCE STANDARD
- 90 OTHERS
- GENERAL
- STRUCTURE, FUNCTION AND MAINTENANCE STANDARD
- TESTING, ADJUSTING AND TROUBLESHOOTING
- DISASSEMBLY AND ASSEMBLY KOMATSU Excavator
- Remove lock plate (I), then remove seat (2) and valve (3).
- Remove yoke piston assembly (5) from recoil spring assembly (4).
- Disassembly of recoil spring assembly 1) Set recoil spring assembly (4) to tool Dl.
- a The recoil spring is under large installed load, so be sure to set the tool properly.
- Failure to do this is dangerous.
- Sr Installed load of spring : 78.4 kN(8,OOO kg)
- 2) Apply hydraulic pressure slowly to compress spring, then remove nut (6).
- * Compress the spring to a point where the nut becomes loose.
- * Release the hydraulic pressure slowly and release the tension of the spring.
- Sr Remove pilot (8), cylinder (91, and dust seal (IO) from spring (7).
- 202FO5465A
- Disassembly of yoke piston assembly 1) Remove wear ring (12) from yoke piston (I I).
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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