1991 Komatsu PC150-5 Hydraulic Excavator Shop Manual

Komatsu PC150-5 Excavator Workshop Documentation

• Covers 1991 and later Komatsu PC150-5 hydraulic excavators, including standard, wide triple-shoe, and swamp-shoe configuration variants
• Original OEM publication P/N 07-91(02)00711, printed in Japan
• Contains 47 detailed hydraulic circuit and electrical wiring schematics plus extensive component-structure diagrams
• Accessible from your device as soon as the order is placed
• Permanent availability in your purchase account — no re-buy required
• Laid out for standard letter and A4 printing
• Full-text search finds any part number in seconds
• This 1991 shop manual serves as the primary technical reference for the 6001 and up serial number range

Structural and Technical Coverage

This Komatsu PC150-5 shop manual documents the technical structure and operating principles of the excavator's major systems. Initial sections detail the chassis, powertrain, and hydraulic layout, while subsequent chapters explain the electronic systems, including the PEMC pump and engine control logic. Experts will find specialized data on the OLSS (Open center Load Sensing System), control valve functions, and travel motor operations. The documentation provides a logical flow from structural overview to component-level function, serving as an essential resource for those understanding the integration of Komatsu’s engine and hydraulic controls.

Specification and Reference Data

Standard reference values are provided throughout the text, including torque specifications for standard bolts and specialized split-flange hardware. Hydraulic maintenance is supported by data on tank capacities, relief valve settings, and fluid requirements across varying ambient temperatures. Electrical integrity is documented via detailed wire-code tables, which classify cables by thickness, current rating, and function. Reference charts for the swing motor, travel motor, and hydraulic cylinders provide critical dimensions such as stroke, piston diameters, and maximum pressures, which are vital for matching what an OEM service publication covers to your machine. All service data shown here is for reference only — qualified technicians and the original OEM documentation remain the authoritative source for any hands-on work. An official 520-page Komatsu OEM shop manual covering the 1991 and up PC150-5, documenting hydraulic, engine, electrical, and control system specifications for the 6001 and up serial range.