The Clark CGP/CGC Series Forklift, encompassing models such as the CGP 40, CGP 45, CGP 50, CGP 55, CGC 40, CGC 50, CGC 55, CGC 60, and CGC 70, represents robust engineering designed for demanding material handling applications. These forklifts are powered by either a GM-Vortec V-Type 6-cylinder, 4.3L water-cooled engine or Perkins Phaser & 1000 Series diesel engines, available in 4 or 6-cylinder configurations with various aspiration and fuel systems. Their construction emphasizes reliability and performance, featuring advanced power steering, automatic or hydrostatic transmissions, and comprehensive hydraulic systems with components like pumps, control valves, and tilt cylinders. This Workshop Service Repair Manual provides essential information for maintaining and repairing the Clark CGP/CGC Series Forklifts. It covers a wide range of topics, including detailed procedures for routine maintenance, lubrication, and tightening torques, as well as in-depth troubleshooting guidance. The manual also details the electrical system, chassis components, and transmission systems, offering step-by-step instructions, diagrams, and exploded views. This resource is invaluable for owners, technicians, and mechanics seeking to ensure the optimal performance and longevity of their Clark forklifts.