Overview
The Komatsu WA420-3 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 Serial Numbers, WA420H20051 and up, 50001 and up and 15001 and up. The table below follows the provided section names and selected topics; consult the manual for the exact procedures and specifications.
Table of Contents
Komatsu WA420-3 Manual
Main sections and selected subjects identified in the source documentation:
- Serial Numbers
- WA420H20051 and up
- 50001 and up
- 15001 and up
- Manuals: Shop Manual
- General
- Engine
- Power Train
- Steering System
- Brake and Air System
- Work Equipment System
- Electric and Electronic System
- Others
- STRUCTURE AND FUNCTION
- TESTING AND ADJUSTING
- DISASSEMBLY AND ASSEMBLY
- MAINTENANCE STANDARD
- This section gives the judgement standards when inspecting disassembled parts.
Using the Technical Reference
Use the identified sections to locate relevant information, and follow any model-specific instructions, limits and precautions in the original documentation.










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