Komatsu WA470-3, WA470 Avance Wheel Loader Factory Shop Manual

• Official Komatsu shop manual SEBM006307 (issued August 2001).
• Covers 2001–2008 Komatsu WA470-3 and WA470 Avance wheel loaders equipped with S6D125 engines and TCA38-8A torque converters.
• Focuses exclusively on the primary engineering specifications for the 50001-and-up serial number cohort.
• Delivers over 975 pages of technical diagrams, hydraulic circuit schematics, torque specifications, and system-function theory.

Manual Content

Built specifically for service technicians, this guide provides a complete breakdown of the loader's power train architecture. It dives deep into the transmission, torque converter, and axle differential components. You will find detailed structures, functions, and testing parameters for complex hydraulic systems. This includes precise data on the transmission control valve, modulation valves, and steering circuits. Instead of just listing parts, the chapters follow a logical progression through component disassembly, assembly sequences, and rigorous maintenance standards for high-load environments. It makes understanding the mechanical interplay of these heavy-duty systems straightforward.

Technical Specifications

The engine data details an 11.04-liter displacement producing 196 kW of power. For the transmission hydraulic circuit, main relief valve pressure standards are mapped out directly within the system diagrams. Coolant capacity is firmly set at 68 liters. Pay close attention to the hydraulic tank capacity, as it varies depending on your exact machine. Earlier units hold 294 liters, while later models are rated at 280 liters.

You also get a comprehensive, multi-stage reference table for standard metric bolt torque values. These range from 13.2 Nm all the way up to 3290 Nm, depending on the thread diameter. Additionally, the manual explicitly defines final drive planetary gear specifications and differential torque proportioning mechanisms for both front and rear axles.

Working on heavy machinery involves significant physical hazards. The technical data discussed here serves strictly as a reference point. To ensure shop floor safety and proper mechanical integrity, all hands-on maintenance must be performed exclusively by qualified technicians utilizing the complete original OEM documentation.