Komatsu PC35R-8 PC45R-8 Hydraulic Excavator Service Manual (P/N WEBM003900)

• Official Komatsu Utility Division publication (WEBM003900) covering 2002 PC35R-8 and PC45R-8 hydraulic excavators (Serial numbers starting at F20932 and F21251) delivered as a 286-page PDF.
• Features 35 exploded-view component diagrams and three comprehensive wiring schematics.
• Includes complete hydraulic pressure settings, standard torque specifications, and fluid capacity charts.
• Covers the Closed Center Load Sensing System (CLSS), Proportional Pressure Control (PPC) valves, track frames, recoil springs, swivel joints, travel motors, and swing machinery.
• Details testing and adjusting procedures, removal and installation steps, maintenance standards, troubleshooting charts, hydraulic circuit diagrams, electrical diagrams, and weight tables.
• Explains the structure and function of the P.T.O., carrier rollers, track rollers, steel shoes, control valves, accumulators, and solenoid valves.
• Highlights disassembly and assembly procedures, hammer PPC valves, TCC valves, LS valves, main relief valves, electric wire codes, and coating materials.

Component and System Documentation

When you need to verify system structures on the shop floor, this OEM manual provides the exact reference data required. It breaks down the power train, swing circle, and final drive gear reduction ratios. You will find detailed overviews of the work equipment, outlining the exact layout of boom cylinders, arm cylinders, and bucket hydraulics. Providing comprehensive step-by-step removal and installation instructions, this document allows you to perform heavy-duty shop repairs in-house. Independent mechanics can confidently tackle complex teardowns, such as overhauling the main hydraulic pump, rebuilding the final drive, or servicing the swing motor, saving the high costs associated with outsourcing to a dealership. Serving as an advanced technical reference, it also supports accurate component identification and professional troubleshooting.

Specification and Reference Data

Operating at a maximum hydraulic pressure of 245 bar at the main relief valve and an engine rated speed of 2500 rpm, these machines require precise maintenance. The manual outlines specific fluid change intervals and temperature-based coolant requirements to keep the equipment running efficiently. A major advantage for your daily shop routine is the ability to directly cross-reference exact OEM test metrics against actual machine performance. By matching electrical connections with the OEM electric wire codes and applying the specified coating materials, you ensure factory-grade reassembly and prevent costly shop comebacks. Utilizing the provided cross-section views and wire rope lifting angle charts significantly minimizes diagnostic downtime when calibrating the CLSS or evaluating complex powertrain faults.

Please note: High-pressure hydraulic systems pose significant risks. Always consult a certified technician and adhere to standard safety protocols before performing any physical maintenance or adjustments based on these reference charts.