The Komatsu WA600-3 Avance, including the WA600-3D (TBG SPEC.) variant, represents a robust and reliable wheel loader designed for demanding operational environments. Engineered with precision, this machine is built to deliver exceptional performance and durability. Its advanced design incorporates a powerful Komatsu SAA6D140E-3 engine, a turbocharged, intercooled diesel unit displacing 15.24 L, capable of producing 310 kW (416 hp) and 1820 Nm of torque. Coupled with the Komatsu Advanced Transmission system offering four forward and four reverse gears, and a hydrostatic power steering system, the WA600-3 Avance is optimized for efficiency and control in heavy-duty applications. This comprehensive factory service and repair manual provides detailed information essential for the maintenance, diagnosis, and repair of the Komatsu WA600-3 Avance and WA600-3D models with serial numbers 50001 and up. It covers critical aspects including fluid capacities, maintenance intervals, engine and transmission specifications, and operational dimensions. The manual is presented in English and is designed to assist owners, mechanics, and technicians in ensuring the longevity and optimal performance of their equipment through accurate and thorough procedures.