This workshop service repair manual covers the Clark GPX Series lift trucks, including models GPX 35, GPX 40, and GPX 50E. These industrial vehicles are engineered for demanding material handling applications, featuring robust construction and reliable performance. Their design focuses on efficiency and durability, making them suitable for a wide range of operational environments. The specific lift capacities range from 3500 to 5000 kg, indicating their capacity to handle substantial loads. This comprehensive manual provides detailed information essential for the maintenance, repair, and servicing of your Clark lift truck. It includes in-depth coverage of all major systems, such as the industrial internal combustion engine, automatic transmission, chassis, braking, steering, and hydraulic systems. Technicians and owners will find step-by-step procedures, technical specifications, and troubleshooting guides designed to ensure optimal vehicle performance and longevity. The manual is presented in English and is intended to be a primary resource for all service-related needs.