This shop manual provides detailed service and repair instructions for the Komatsu D65EX, D65PX, and D65WS bulldozer models. It covers comprehensive procedures for diagnosing, troubleshooting, and repairing major components such as the engine, transmission, hydraulic systems, undercarriage, and electrical systems. The manual includes step-by-step guides for disassembly, inspection, and reassembly, along with technical specifications and maintenance schedules. Essential for technicians and mechanics, this document ensures the proper maintenance and repair of these bulldozers, facilitating optimal performance and longevity.