Komatsu PC400 PC450-6 Excavator Service Manual | 2004-2008

Complete OEM factory service manual for the 2004-2008 Komatsu PC400-6, PC400LC-6, PC450-6, and PC450LC-6 hydraulic excavators, covering all serial numbers from 32001 (PC400) and 12001 (PC450) and up. Use it to service, repair, and overhaul every major system including the hydraulic circuits, undercarriage, upper structure, electrical system, and SA6D125-2 engine. Delivered instantly as a fully searchable PDF compatible with any PC, Mac, tablet, or mobile device.

• Adobe Acrobat (PDF) format
• Fully searchable
• Easily print any or all content
• Everything needed to repair & maintain your machine
• Troubleshooting instructions, wiring diagrams, and reference material

• Komatsu PC400-6 (Serial No. 32001 and up)
• Komatsu PC400LC-6 (Serial No. 32001 and up)
• Komatsu PC450-6 (Serial No. 12001 and up)
• Komatsu PC450LC-6 (Serial No. 12001 and up)

• 01 - General
• 10 - Structure and Function
• 20 - Testing and Adjusting
• 30 - Disassembly and Assembly
• 40 - Maintenance Standard
• 90 - Others

• Complete engine disassembly and assembly procedures
• Carburetor, fuel system, and air cleaner diagnostics
• Electrical, ignition, and charging system procedures
• Cooling system inspection and maintenance
• Hydraulic system testing, pump repair, and control valve service
• Hydraulic cylinder inspection, seal replacement, and repair
• Drivetrain, final drive, and undercarriage service procedures
• Frame, chassis, and structural component service
• Troubleshooting charts and diagnostic workflows
• OEM specifications and torque tables
• High-resolution wiring and system diagrams

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