2000s Komatsu PC30R-8, PC35R-8, PC40R-8, PC45R-8 Service Manual

Komatsu Mini Excavator Workshop Coverage

• Covers Komatsu PC30R-8, PC35R-8, PC40R-8, and PC45R-8 mini excavators, including canopy and cab configurations with rubber or steel shoe options.
• Official OEM publication SEBM012604, printed September 2000.
• Includes 12 hydraulic circuit diagrams, 5 technical specification tables, and detailed weight reference charts for major components.
• Fully searchable, indexed PDF available as an instant download immediately after checkout.
• Contains complete structural and functional details for the 3D84E-3F and 4D84E-3D engine-series compatible models.

Component and System Documentation

This official 588-page Komatsu OEM workshop manual serves as the primary technical reference for the PC30R-8 through PC45R-8 series launch build. Forget generic guides. Mechanics and shop owners get direct access to machine-specific data here. The document breaks down the mechanical architecture of the engine controls, power train, swing circle, and track frames. You can easily navigate the PDF via instant download right to your tablet or shop computer. This gets you back to the machine faster.

The hydraulic system sections provide a comprehensive walkthrough of the 9-spool control valve, center swivel joint, and the specific functional differences between the travel motor series. Early chapters outline crucial hoisting instructions for heavy components alongside precise torque standards for metric bolts and flared joints. Please note that heavy equipment maintenance carries inherent risks; always ensure you or your shop staff adhere to standard safety protocols and consult certified professionals before undertaking major structural overhauls.

Specification and Reference Highlights

Dedicated standard tables document the vital performance parameters for each model variant. For example, intake valve clearance is listed at 0.20 mm, while fuel injection timing is specified at 14 ± 1 degrees before top dead center across all covered engine configurations. You will also find exact fluid specs, including the 7.5-liter cooling system capacity specific to the PC40R-8 and PC45R-8 units.