This Service Operation Manual covers the Komatsu WA150PZ-5 Wheel Loader, serial number H50051 and up. Engineered for demanding operational environments, this machine features a joystick steering system and a central lubrication system, designed to deliver robust performance and reliability. Its construction and advanced operational features make it a capable asset for various industrial and construction applications. This manual provides comprehensive information essential for the maintenance and repair of your Komatsu WA150PZ-5. It includes detailed service procedures, maintenance schedules, tightening torque data, and information on periodic replacement of safety-critical parts. Furthermore, the manual covers crucial fluid requirements, including fuel, coolant, and lubricants, ensuring that owners, mechanics, and technicians have the necessary knowledge to keep the equipment in optimal working condition.