2000s Komatsu PC30R-8, PC35R-8, PC40R-8, PC45R-8 Service Manual
Comprehensive service and repair manual for Komatsu PC30R-8, PC35R-8, PC40R-8, PC45R-8 mini excavators, covering diagnostics, service, and parts. Publication SEBM012604.
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Sample pages from the 2000s Komatsu PC30R-8, PC35R-8, PC40R-8, PC45R-8 Service Manual manual
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Komatsu Models Covered & Key Technical Specifications
Models: Komatsu PC30R-8, PC35R-8, PC40R-8, PC45R-8
Sub-models / Variants: Canopy specification, Cab specification, Rubber shoe, Steel shoe
Build Years: 2000s
Serial Numbers: PC30R-8: 10001 and up, PC35R-8: 35001 and up, PC40R-8: 30001 and up, PC45R-8: 5001 and up
Technical Data:
- Engine model (PC30R/35R-8): 3D84E-3F
- Engine model (PC40R/45R-8): 4D84E-3D
- Engine configuration: 4-cycle, water-cooled, in-line direct injection
- Valve clearance (intake): 0.20 mm
- Nozzle holder torque: 4.41 ± 0.49 Nm
- Injection timing: 14 ± 1 deg before top dead center
- Compression pressure: 2.55 kg/cm² at rated speed
- Engine oil pressure (low idle): Min. 0.1 MPa
- Cooling system capacity (PC30R/35R): 6.8 liters
- Cooling system capacity (PC40R/45R): 7.5 liters
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Komatsu Mini Excavator Workshop Coverage
- Covers 2000s Komatsu PC30R-8, PC35R-8, PC40R-8, and PC45R-8 mini excavators, including canopy and cab configurations with rubber or steel shoe options
- Official Komatsu publication SEBM012604, printed September 2000
- Includes 12 hydraulic circuit diagrams, 5 technical specification tables, and detailed weight reference charts for components
- Delivered as a direct download the moment payment clears
- Indexed PDF search covers every chapter and appendix
- Contains complete structural and functional details for the 3D84E-3F and 4D84E-3D engine-series compatible models
- This manual serves as the primary technical reference for the PC30R-8 through PC45R-8 series launch build
Component and System Documentation
The 588-page manual is structured to provide machine-specific technical data across primary excavator systems. Early sections outline safety precautions, hoisting instructions for components, and precise torque standards for metric bolts and flared joints.
Following the introductory chapters, the document details the mechanical architecture of the engine controls, power train, swing circle, and track frames. The hydraulic system is extensively documented, providing a comprehensive walkthrough of the 9-spool control valve, center swivel joint, and the specific functional differences between the travel motor series.
Specification and Reference Highlights
Technical data is provided in dedicated maintenance and standard tables, documenting the performance parameters for each model variant. Valve clearance for the intake is listed at 0.20 mm in the engine specification tables. Cooling system capacity for the PC40R-8 and PC45R-8 is documented at 7.5 liters. Fuel injection timing is specified at 14 ± 1 degrees before top dead center across documented engine configurations.
Reference only — always consult a certified technician before performing service on this equipment.
An official 588-page Komatsu OEM workshop manual covering the 2000s PC30R-8, PC35R-8, PC40R-8, and PC45R-8, documenting hydraulics, chassis, electrical, and engine specifications for the 3D84E and 4D84E series configurations.
Document Reference: SEBM012604, printed September 2000
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