Komatsu PC27-45MRX Excavator Shop Manual 965 Pages
PC27MRX–PC45MRX service documentation with complete hydraulic system, engine specifications, and component rebuild procedures. Document ID: SEBM016808
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Sample pages from the Komatsu PC27-45MRX Excavator Shop Manual 965 Pages manual
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Komatsu Models Covered & Key Technical Specifications
Models: Komatsu PC27MRX-1, PC30MRX-1, PC35MRX-1, PC40MRX-1, PC45MRX-1
Sub-models / Variants: Canopy specification, Cab specification
Build Years: 2003
Serial Numbers: PC27MRX-1 (11574 and up), PC30MRX-1 (10001 and up), PC35MRX-1 (3930 and up), PC40MRX-1 (1001 and up), PC45MRX-1 (1001 and up)
Technical Data:
- Engine displacement: 1.490 liters (1,496 cc) for 3D84E-3 engine
- Maximum rated power: 20.6 kW at 2,500 rpm (PC30MRX-1 configuration)
- Peak torque: 85.3 N·m (8.7 kgm) at 1,800 rpm
- Main hydraulic relief pressure: 26.3 ± 0.49 MPa (268 ± 5 kg/cm²)
- Cooling system max temperature: 120°C (248°F)
- Swing motor speed: 9.3 rpm
Komatsu Manual Features & Content Preview
Inside the 2003 Komatsu PC27MRX-1 through PC45MRX-1 Shop Manual
- Covers 2003 Komatsu PC27MRX-1, PC30MRX-1, PC35MRX-1, PC40MRX-1, and PC45MRX-1 excavators, including both canopy and cab configurations
- Original OEM publication, Form SEBM016808, published August 2003
- Contains 947 pages with hundreds of exploded-view diagrams, hydraulic schematics, and standard torque tables
- Accessible from your device as soon as the order is placed
- Stored against your account so you can retrieve it after a hard-drive loss
- Suitable for printing individual sections for shop-floor use
- Full-text search finds any part number in seconds
- This 947-page factory manual provides the technical foundations for the MRX-1 series, documenting serial-number-specific configurations and component interdependencies for the entire machine lineup
Structural and Technical Documentation
This factory manual provides an expert-level technical reference for the Komatsu PC27MRX-1 through PC45MRX-1 series, including PC30MRX-1, PC35MRX-1, PC40MRX-1, and PC45MRX-1 models. The document is organized into functional sections including general machine assembly drawings, system structure and function, testing and adjustment procedures, disassembly and assembly, and maintenance standards. Technical data pages detail specific fluid capacities, lubrication schedules, and electrical wire codes for diverse hydraulic and engine systems.
Specification Highlights
The manual documents essential performance parameters and component data to assist in the identification of machine configurations and maintenance needs. Engine displacement for the 3D84E-3 engine is documented at 1,496 cc in the specification tables. Maximum hydraulic system relief pressure for the PC27MRX-1 main control valve is set at 26.3 MPa. Swing motor rated speed is listed at 1,266 rpm for the PC27MRX-1 model variant. Reference how factory workshop documentation is structured to effectively utilize the detailed electrical wiring diagrams and hydraulic circuit specifications provided throughout these sections.
Note: This shop manual serves as a technical reference guide for authorized service work on the 2003–2005 Komatsu PC27MRX-1, PC30MRX-1, PC35MRX-1, PC40MRX-1, and PC45MRX-1 series excavators.
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