Komatsu PC95-1 Excavator Factory Shop Manual (P/N WEBMPC9500)

• Covers 5000007 and up serial-numbered Komatsu PC95-1 hydraulic excavators equipped with the Perkins 1004-4 industrial engine
• Original 315-page OEM publication WEBMPC9500, printed July 1996 for the FAI Komatsu Industries product line
• Contains 47 labeled component diagrams, 5 hydraulic and electrical schematic overview plates, and 24 detailed technical specification tables

Technical Organization

This factory manual breaks down the technical architecture of the Komatsu PC95-1 across four primary chapters. It maps out the structural operation of major assemblies like the power train, swing circle, track frame, and auxiliary pump systems. When troubleshooting on the shop floor, the testing and adjustment sections categorize exact procedures to verify hydraulic pressure, engine speed, and swing circuit performance. Final chapters define strict maintenance standards for inspecting disassembled components. They provide the criteria mechanics need to evaluate wear limits in gear sets, pistons, and seal assemblies. Before tackling maintenance on these high-pressure rigs, always consult a certified technician to ensure safe servicing procedures.

Hydraulic and Mechanical Specifications

The reference data details critical operating parameters for both the Perkins 1004-4 engine and its hydraulic circuitry. Primary circuit relief valve pressure sits at a specified 350 bar. Maintenance standards document the track frame alignment baseline at 165 mm. During high idle, engine oil pressure for the 1004-4 must hit the 3.4 to 4 kg/cm² range. Travel motor speed parameters include a 27 mm minimum threshold. You will also find specific torque values for standard fasteners, scaling from 9.5 Nm for 6 mm threads all the way up to a massive 4050 Nm for 39 mm diameter bolts in high-strength 10.9 applications.