Komatsu PW140-7 hydraulic excavator service repair manual
(sn h55051 and up).
The index content for the PW140-7 shop manual is as follows:
00 FOREWORD – Page 00-1
01 GENERAL – Page 01-1
10 STRUCTURE, FUNCTION AND MAINTENANCE STANDARD – Page 10-1
20 TESTING AND ADJUSTING
General Testing and Adjusting – Page 20-1
Troubleshooting – Page 20-201
Troubleshooting when failure code is indicated – Page 20-301
Troubleshooting of electrical system (E-Mode) – Page 20-501
Troubleshooting of electrical system (Error Checking of items without Monitor codes) – Page 20-601
Troubleshooting of hydraulic and mechanical system (H-Mode) – Page 20-701
30 DISASSEMBLY AND ASSEMBLY – Page 30-1
90 OTHER – Page 90-1
Komatsu PW140-7 hydraulic excavator service repair manual
Safety Precautions: Guidelines for using protective gear, handling tools, preventing accidents, and maintaining a clean workspace.
1- Work Preparations: Steps to park the machine on level ground, secure components, and ensure safety before starting work.
2- Work Precautions: Handling pressurized systems, preventing spills, using lifting equipment, and careful handling of parts.
3- Disassembly and Installation: Detailed procedures for components like the fuel supply pump, injectors, front and rear oil seals, and cylinder head assembly.
4- Includes torque specifications and required special tools.
5- Pipe Handling: Instructions for using plugs and connectors to prevent contamination and leaks. 6
Testing and Adjustments: Procedures for bleeding air from hydraulic systems and checking fluid levels after repairs.
7- The manual emphasizes following instructions to ensure safety and proper machine operation.
