Overview
The Komatsu WA500-7 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 A94001 and up, 10001 and up, Manuals and Index and Foreword. 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 WA500-7 Manual
Main sections and selected subjects identified in the source documentation:
- A94001 and up
- 10001 and up
- Manuals: Shop Manual
- Index and Foreword
- Specification
- Structure, functions and maintenance standard
- Standard Value Table
- Testing and Adjusting
- Troubleshooting
- Disassembly and Assembly
- Maintenance Standard
- Appendix
- Diagrams and Drawings
- Index
- Backup lamp and brake lamp
- From battery relay
- Fuse box 1
- Brake lamp switch
- Brake lamp relay
- Brake lamp (L.H.)
- Brake lamp (R.H.)
- Operation (WA500-G7B0-044-K-00-A)
- When the brake pedal is depressed, the brake lamp switch contacts close and a current flows into the
- brake lamp relay coil to close the relay contacts, and then the following circuit is formed and the right and
- left brake lamps light up; Fuse → brake lamp relay terminal 3 o terminal 5 o right and left brake lamps o
- ground.
- When the brake pedal is released, the contacts of the brake lamp switch contacts open and the brake
- lamp relay contacts open to turn the brake lamps OFF.
- The current flows into the brake lamp circuit when the battery relay operates, thus the brake lamps do not
- light up while the starting switch is in the OFF position.
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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