Komatsu PC300HD-6 & PC300LC-6 Hydraulic Excavator 1995–1996 Shop Manual (P/N CEBM3006C2)

• Built for heavy-duty technicians servicing the 1995–1996 Komatsu PC300LC-6 and PC300HD-6
• Official 763-page Komatsu OEM publication (P/N CEBM3006C2, dated June 1996)
• Documents engine, chassis, hydraulic, and electrical specifications for the A80001 and up serial series
• Contains 80 detailed system diagrams and 15 mechanical component exploded views
• This 1996 first edition serves as the master chassis and hydraulic repair document for both the LC-6 and HD-6 series units
• Covers testing and adjusting, disassembly and assembly, troubleshooting, the electronic control system, the machine monitor system, PPC valves, and the boom holding valve
• Features electrical wiring diagrams, electrical circuit diagrams, hydraulic circuit diagrams, hydraulic piping drawings, specification drawings, and troubleshooting charts

Component and System Documentation

The shop manual documents the technical parameters and structural layout for these machines. It provides clear functional explanations for engine-related components, highlighting the dampener assembly and radiator cooling configurations. Navigating a complex overhaul or a routine undercarriage repair requires accurate reference material. Professionals will find detailed breakdowns of the power train here. The text maps out the final drive, swing machinery, and hydraulic systems, supplying specs for the main pumps, control valves, and suction safety valves.

To help workshops avoid expensive trips to the dealership, this PDF manual provides step-by-step disassembly and assembly instructions that mechanics can execute in-house. It allows professionals to independently overhaul the travel motor, swing motor, main hydraulic pump, and center swivel joint. Furthermore, having the exact factory testing and adjusting procedures prevents costly diagnostic delays when performing tasks like measuring valve clearance, testing the clearance of the swing circle bearing, or bleeding air from the hydraulic circuit.

Additional sections focus on the track frame and recoil spring architecture. These chapters offer guidance on track shoe selection and track roller configurations. You will also find an explanation of the Closed Center Load Sensing System (CLSS). It breaks down basic principles, pressure compensation, and load relief operation. Comprehensive schematics illustrate hydraulic piping for the multi-spool valve arrangements.

Specification and Reference Data

This reference delivers the exact data needed for daily workshop tasks. It lists standard bolt and nut tightening torques, featuring specific tables for split flange bolts and flared nuts. You get exact fluid capacities for hydraulic systems, swing machinery, and engine cooling. Before applying these torque values or testing pressurized systems, technicians must review the integrated safety precautions to prevent component failure or injury.

Electrical system data includes wire code classifications by thickness and color, bringing pinout-level detail directly to the shop floor. To further support routine workshop operations, the publication supplies comprehensive conversion tables. Essential diagnostic baselines, such as hydraulic pump delivery, relief valve pressure settings, and swing motor torque, are clearly documented across the maintenance standards sections.