This service repair workshop manual covers the Clark GPX 30, GPX 55, DPX 30, and DPX 55 models, part of the GPX710U series. While specific production years are not detailed, this manual provides comprehensive information for these industrial vehicles. Clark forklifts are known for their robust engineering and reliability, designed to meet the demanding needs of various operational environments. This manual aims to be a definitive resource for understanding and maintaining these essential pieces of equipment. The purpose of this English-language manual is to offer detailed guidance for the maintenance and repair of your Clark forklift. It includes extensive coverage of key systems such as the engine, cooling system, fuel system, transmission, drive axle, chassis components including wheels, tires, braking, and steering, as well as hydraulic systems and body elements like uprights and counterweights. With clear instructions and technical specifications, this manual empowers owners and technicians to perform necessary upkeep, troubleshoot issues, and ensure the continued optimal performance and longevity of the vehicle, ultimately saving time and money.