Overview
The Komatsu PC15MR-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 Manuals, 01 GENERAL , 10 STRUCTURE AND FUNCTION and 20 TESTING AND ADJUSTING . 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 PC15MR-1 Manual
Main sections and selected subjects identified in the source documentation:
- 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 PC15MR-1
- ADJUSTING VALVE CLEARANCE
- Remove air cleaner (1), then remove the cylinder head cover.
- Remove air cleaner bracket.
- Remove cap (2) of the flywheel housing.
- Cylinder No. 1 is the cylinder at the flywheel end of the engine.
- When the crankshaft is rotated, the valves of the cylinder at top dead center do not move.
- If the valves are moving, rotate the crankshaft one more turn and align the lines.
- Rotate the crankshaft 240 each time and adjust the valve clearance of each cylinder according to the firing order.
- Firing order : 1 3 2
- There is a line on the flywheel for the top dead center of each cylinder.
- 9 Locknut : 25.5 2.9 Nm {2.6 0.3 kgm} – After tightening the locknut, check the clearance again.
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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