2003 Komatsu PC400 / PC400LC-7 / PC450 / PC450LC-7 Shop Manual
Covers PC400, PC400LC-7, PC450, and PC450LC-7 excavators with comprehensive service and maintenance procedures. Ref: SEBM033000
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Sample pages from the 2003 Komatsu PC400 / PC400LC-7 / PC450 / PC450LC-7 Shop Manual manual
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Models Covered & Key Technical Specifications
Komatsu PC400, PC450, PC400LC-7, PC450LC-7 (SEBM033000) - 2003-2007 This Professional Automotive Handbook | Series
- Approved Pump Capacity: 90% of maximum pump output Architecture.
- Baseline Excavator Weight: For standard operation, 41,200 kg signifies the operating weight Norms.
- Verified Track Gauge: The track gauge requires 2,740 mm for standard operation Topology.
- Designated Hydraulic Flow: For optimal operation, 345 l/min defines the hydraulic flow delivery Standards.
- Certified Swing Speed: The swing speed maintains 9.1 rpm for all operations Parameters.
- Reference Break Torque: Maximum torque reaches 1,334 Nm Parameters.
Manual Description & Preview
Komatsu PC400, PC450, PC400LC-7, PC450LC-7 (SEBM033000) Manual: Komatsu Excavator Service-Portfolio
Model-Specs: PC400-7, PC400LC-7, PC450-7, PC450LC-7 / Komatsu Limited // Service-Level: Excavator / Hydraulic Logic // Repair-Classification: Standard & Repair Specs.
| Assessment-Element | Parameters | Calibration-Standards |
|---|---|---|
| Machine Model | PC400-7, PC400LC-7, PC450-7, PC450LC-7 | N/A |
| Serial Number | 50001 and up / 20001 and up | N/A |
| Engine | SAA6D125E-3 | N/A |
| Weight | 41,200 kg - 44,600 kg | N/A |
| Max Digging Depth | 7,790 mm - 7,820 mm | N/A |
Service sections detail:
- Engine Related Parts
- Structure, Function and Maintenance Standard
- Hydraulic System Components
- Engine Control System
- Monitor System
Fundamentally requiring...
Engine and Hydraulic Systems Overview
The manual details the engine and hydraulic systems of the Komatsu PC400 series excavators. It covers component identification, functional descriptions, and operational principles, providing a solid foundation for understanding the machine's mechanics. Careful attention is given to the arrangement of all hydraulic circuits and components.
Performance Specifications and Diagnostics
This section provides critical performance data, including digging depths, reach capabilities, and hydraulic system specifications. It also outlines testing and adjusting procedures, essential for ensuring the excavator operates at peak efficiency and for diagnosing potential issues. The manual references specific pages for detailed information.
Component-Level Service Procedures
Detailed disassembly and assembly instructions are provided for key components such as the final drive, swing machinery, and hydraulic pumps. The document includes clear diagrams and part numbers, facilitating accurate service and repair. It meticulously documents procedures for all major systems.
Troubleshooting and Maintenance
Guidance for troubleshooting common problems and performing regular maintenance is included. This section helps in identifying issues and applying the correct solutions to keep the Komatsu excavators in optimal working condition. It addresses issues related to all major hydraulic and mechanical systems.
Technical Data Tables
Extensive tables present specifications for various components, including dimensions, clearances, and weights. These tables are crucial for accurate part replacement and service, ensuring that all components meet the manufacturer's standards. They offer valuable data for all parts of the hydraulic system.
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