This Service Repair Manual covers the Clark GPX and DPX series forklifts, including models GPX 30, GPX 35, GPX 40, GPX 40S, GPX 50, GPX 55, DPX 30, DPX 35, DPX 40, DPX 40S, DPX 50, and DPX 55. These robust forklifts are engineered for demanding industrial applications, offering reliability and performance for maintaining, assembly, disassembly, and servicing operations. Their design prioritizes efficient operation and longevity, making them a trusted choice for material handling needs. This comprehensive English-language manual provides detailed guidance for all aspects of forklift maintenance and repair. It includes step-by-step instructions, diagnostic capabilities, and technical specifications, accompanied by real photo illustrations and schemes. Covered topics range from engines and cooling systems to hydraulic circuits and uprights, empowering owners and technicians to perform servicing and repairs effectively, saving time and resources.