This manual covers the Komatsu WA500-3H, a robust wheel loader designed for demanding operational environments. Built with Komatsu's renowned engineering and commitment to reliability, this machine is equipped with a powerful Komatsu SAA6D140E-3 diesel engine, delivering 224 kW (300 HP) of net power. Its advanced Komatsu Hydro-Shift automatic transmission, featuring 4 forward and 4 reverse gears, ensures efficient power delivery and maneuverability. With an operating weight of 36,200 kg and a standard bucket capacity of 5.4 m³, the WA500-3H is engineered for high productivity in heavy-duty applications. This comprehensive Service Repair Manual provides essential information for maintaining and repairing the Komatsu WA500-3H. It details general information, structure and function, testing, adjustment, troubleshooting, disassembly, assembly, maintenance standards, and other critical areas. The manual is written in English and is intended to assist owners, mechanics, and technicians in ensuring the optimal performance and longevity of the equipment. It includes detailed specifications and procedures to support all maintenance and repair activities.