1995-2002 Komatsu PC300-6 / PC300LC-6 / PC350-6 / PC350LC-6 Service & Repair Manual • P/N SEBM014307, May 2002

• Covers 1995–2002 Komatsu PC300-6, PC300LC-6, PC350-6, and PC350LC-6 hydraulic excavators, including HD and LL variants
• Original OEM publication P/N SEBM014307 (May 2002)
• Delivered as an instant download for immediate workshop access
• Contains 809 pages of structural overviews, component logic, and system diagrams for descriptive repair reference
• Fully searchable OCR text layer lets you jump directly to any torque spec or part name
• Formatted for easy standard letter and A4 shop printing
• Details the SAA6D108-2 engine assembly and hydraulic system configuration
• Documents serial numbers 33001 and up (PC300-6/LC-6) and 12001 and up (PC350-6/LC-6)
• Maps out the complete architecture for the CLSS (Closed-center Load Sensing System)

Component and System Documentation

The 1995–2002 Komatsu PC300-6 and PC350-6 service manual delivers in-depth technical breakdowns of the machine's primary assemblies. It maps out the core operating principles behind the engine power train, swing circle, track frame, and control valves. You get a clear view of the pump controllers, solenoid valves, and the complex stage-logic of the 6-spool and 10-spool control setups. Having these structural insights accelerates diagnostics and helps technicians understand system interactions before turning a single wrench. Always review the included heavy machinery safety protocols and pressure-release procedures prior to inspecting hydraulic components. This 2002 final edition serves as an essential descriptive baseline for planning a safe, efficient repair.

Specification and Reference Highlights

Technical data is organized into extensive tables that cover standard tightening torques for metric bolts, flared nuts, split flange bolts, and O-ring boss joints. The documentation details crucial hydraulic performance metrics. For example, it lists a relief cracking pressure of 16.7 ± 6.9 kPa for the hydraulic tank filter. Main hydraulic system pump pressure ratings sit at 34.8 MPa. On the powertrain side, the SAA6D108-2 engine flywheel horsepower pushes 172.8 kW (231.7 HP) at 2,050 rpm. Essential fluid capacities are also clearly defined, noting a 262 L fuel tank requirement to support standard shop maintenance schedules.