Komatsu WA470-5 and WA480-5 Loader Service Manual

Komatsu WA470-5 & WA480-5 Wheel Loader Shop Manual

• Complete coverage for 2005 Komatsu WA470-5 (serial 70001 and up) and WA480-5 (serial 80001 and up).
• Official Komatsu OEM publication SEBM024412 (June 2005) spanning 1,204 pages.
• Features 56 system schematics, 12 major component assembly views, and 14 standardized tightening torque tables.
• Instant PDF download: Get immediate access right after checkout and keep it securely in your account for life.
• Fully indexed and searchable to help you find specific part numbers or diagnostic codes in seconds.
• Print exactly the pages you need and take them straight to the shop floor without ruining a physical manual.
• Provides the definitive structural and maintenance reference for the SAA6D125E-3 engine configuration.

Component Breakdown & System Diagnostics

Eliminate guesswork in the bay. This factory-level reference delivers the exact structural and functional baseline data mechanics need to assess these wheel loaders efficiently. The documentation dives deep into the radiator and cooling system, the complete power train assembly, axle structures, and steering mechanisms.

Working around massive drivetrain components and high-pressure hydraulics carries inherent risks. Always verify factory testing parameters and load tolerances in this manual before inspecting sensitive parts like hydraulic control valves, lock-up clutch variants, or work equipment linkages. The contents bridge the gap between broad assembly blueprints and highly specific diagnostic paths for differential and transmission circuits.

Technical Specifications & Tolerances

Precision is everything when tearing down heavy equipment. The manual includes exact engine performance baselines to speed up your diagnostic workflow. Flywheel horsepower is documented between 181.1 kW and 202.4 kW (depending on operating mode), with maximum torque peaking at a massive 1,294 Nm for the WA480-5. You will also find standardized torque tables covering metric bolts, flared nuts, and split flange hardware to ensure structural integrity during reassembly.

Need quick specs for a fluid change or clutch rebuild? Torque converter stall ratios are clearly laid out at 2.39 for the standard unit and 2.16 for the lock-up clutch variant. The coolant system capacity for both loaders is 50 liters, while the front axle oil filler specifically takes 52 liters on the WA470-5. Critical internal tolerances, such as the 1st-4th clutch separator plate thickness (1.7 mm), are explicitly detailed to help you verify wear limits without wasting billable hours.