Overview
The Komatsu WA150-5 wheel loader 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 65001 and up, H50051 and up, Manuals and General. 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 WA150-5 Manual
Main sections and selected subjects identified in the source documentation:
- 65001 and up
- H50051 and up
- Manuals: Shop Manual
- General
- Structure and Functions
- Testing and Adjusting
- Disassembly and Assembly
- Maintenance Standard
- Others
- Manual Extract When parking brake lever is pulled (OFF to ON)
- 1) When parking brake is set in Free position • When the parking brake is released, both intermediate switch and bottom switch are closed.
- The parking brake pilot lamp goes off regardless of the state of the parking
- brake. Parking brake reminder caution lamp lights up and the alarm buzzer sounds only when the engine is stopped.
- The parking brake is released.
- 2) When parking brake lever is moved from Free position to Mid position
- If the parking brake lever is pulled a little, bottom switch is opened but the contacts of the parking brake relay are kept closed.
- The parking brake pilot lamp and parking brake reminder caution lamp operate as in step 1).
- The parking brake is kept released.
- 3) When parking brake lever is in Lock position • If the parking brake lever is pulled to the end, intermediate switch (1) is opened.
- The parking brake is applied.
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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