The Komatsu WA250-3MC Wheel Loader is a robust piece of equipment designed for demanding operational environments. Featuring a powerful Komatsu SAA6D102E-1 diesel engine with a displacement of 5.88 L, this model offers a net power of 110 kW (148 HP) at 2000 rpm. Its engineering is evident in the advanced Komatsu Hydroshift Transmission with 4 forward and 4 reverse gears, heavy-duty fully floating axles with a limited-slip differential, and a variable displacement piston pump for the hydraulic system. The operator station is equipped with ROPS/FOPS and pilot-assisted hydraulic controls, ensuring both safety and efficient operation. This wheel loader is built for reliability and performance in various industrial and construction applications. This Service Shop Repair Manual provides comprehensive guidance for the Komatsu WA250-3MC Wheel Loader, serial numbers A71001 and up. Covering 864 pages in English, it details essential maintenance procedures, troubleshooting techniques, and technical specifications. The manual includes step-by-step instructions, accompanied by numerous illustrations, drawings, and photos, to assist owners, mechanics, and technicians. Key areas addressed include the engine, transmission, drivetrain, hydraulic system, steering, braking system, and electrical components. Its purpose is to facilitate the proper upkeep and repair of the vehicle, ensuring its continued optimal performance and longevity.