The Komatsu WA900L-3 Wheel Loader is a robust and powerful machine engineered for demanding heavy-duty applications. Featuring a Komatsu SAA6D170E-3 turbocharged, intercooled, direct injection diesel engine with 6 cylinders and a displacement of 21.2 liters, it delivers exceptional performance with a gross power of 605 hp and net power of 590 hp. Its design prioritizes reliability and efficiency, evident in its substantial operating weight of 92,370 kg and a bucket capacity of 10.2 m³. The hydrostatic power steering and planetary powershift transmission with 4 forward and 4 reverse gears ensure precise control and maneuverability in challenging environments. This Service Repair Manual provides comprehensive guidance for the Komatsu WA900L-3 Wheel Loader, serial numbers 52001 and up. It covers essential areas including general information, structure and function, testing and adjusting procedures, disassembly and assembly, maintenance standards, and other critical aspects. The manual is designed to assist owners, mechanics, and technicians in effectively maintaining, troubleshooting, and repairing the vehicle, ensuring its optimal performance and longevity. Detailed technical specifications and safety guidelines are also included to support all service operations.