The Komatsu WA600-3 Avance and WA600-3D Avance (TBG SPEC.) are robust wheel loaders designed for demanding operational environments. These machines are powered by the Komatsu SAA6D140E-2 turbocharged and intercooled diesel engine, displacing 15.24 L and producing up to 300 kW (402 HP) of gross power. Featuring a Komatsu Advanced Transmission (K-AT) with a torque converter offering 4 forward and 4 reverse gears, they are engineered for reliability and efficient material handling. With an operating weight of 47,000 kg and a rated operating capacity of 18,000 kg, these models are built to deliver high performance in construction, mining, and quarrying applications. This Service Repair Workshop Manual provides comprehensive guidance for the Komatsu WA600-3 and WA600-3D Avance wheel loaders, covering serial numbers 50001 and up. The manual details essential information on general operation, structure and function, testing and adjusting procedures, disassembly and assembly, maintenance standards, and other critical aspects of the machine. Its purpose is to assist owners, mechanics, and technicians in performing maintenance, repairs, and troubleshooting to ensure the optimal performance and longevity of the equipment. All pages are printable and the manual is provided in English.