This manual is for the Komatsu PC40-7 (Hydraulic Excavator) with serial numbers 18001 and upwards. It is a comprehensive 387-page workshop manual available in PDF format, designed for professional mechanics and DIY enthusiasts. The manual covers safety information, structure and function, testing and adjusting procedures, disassembly and assembly instructions, and maintenance standards.
The detailed contents of the manual include:
Safety
Structure and Function
Power Train
Swing Circle
Swing Machinery
Track Frame and Recoil Spring
Hydraulic Piping
Hydraulic Circuit Diagram
Hydraulic Tank and Fuel Tank
Hydraulic Pump
Control Pump
7-Spool Control Valve
2-Spool Control Valve
Swing Motor
Center Swivel Joint
Travel Motor
Hydraulic Cylinder
Valve Control
PPC Valve
Solenoid Valve
Work Equipment
Hydraulic Breaker
Electric Circuit Diagram
Monitor System
Testing and Adjustment
Table of Judgement Standard Value
Standard Value Table for Electrical System
Tool for Testing, Adjusting and Troubleshooting
Adjusting Valve Clearance
Measuring Compression Pressure
Adjusting Fuel Injection Timing
Measuring Engine Oil Pressure
Adjusting Fuel Control Lever
Testing and Adjusting Hydraulic Pressure in Work Equipment, Swing, Travel Circuit
Testing Control Circuit Pressure
Measuring Output Pressure of PPC Valve
Adjusting PPC Valve
Measuring Solenoid Valve Outlet Port Pressure
Adjusting Blade Control Lever
Measuring Internal Leakage of Cylinder
Bleeding Air from Hydraulic Circuit
Releasing Remaining Pressure from Hydraulic Circuit
Testing Hydraulic Breakage Gas Pressure
Troubleshooting
Disassembly and Assembly
Special Tool List
Weight Table
Tightening Torques and Standard Value Table
Lubricant and Coolant Table
Engine, Hydraulic Pump
Hydraulic Pump
Gear Pump
Center Swivel Joint
Travel Motor
Swing Motor
Swing Machinery
Revolving Frame
Recoil Spring
2-Spool Control Valve
7-Spool Control Valve
PPC Valve
Hydraulic Cylinder
Work Cylinder
Work Equipment
Bucket
Hydraulic Breaker
Hydraulic Breaker Bushing
Chisel
Maintenance Standard
Swing Circle
Swing Machinery
Sprocket
Track Frame and Recoil Spring
Idler
Track Roller
Carrier Roller
Track Shoe
Hydraulic Pump
7-Spool Control Valve
2-Spool Control Valve
Swing Motor
Center Swivel Joint
PPC Valve
Hydraulic Cylinder
Work Equipment
Hydraulic Breaker
Piston, Chisel
This manual is a valuable resource for maintaining and repairing the Komatsu PC40-7 Hydraulic Excavator, providing detailed information for effective troubleshooting and maintenance.
