This manual covers the Hyster Challenger H170HD / H280HD forklifts, generation G007, designed for heavy-duty material handling. These robust machines are engineered for reliability and efficiency in demanding industrial environments, featuring a Perkins Tier 2 Diesel Engine from the 1100 Series (VK). Their construction and components are built to withstand rigorous use, ensuring consistent performance and longevity in operational settings. This comprehensive Service Repair and Parts Manual in English provides detailed information for the repair, servicing, technical maintenance, and troubleshooting of your Hyster forklift. It includes extensive sections on all major systems, such as the cooling, fuel, hydraulic, brake, transmission, drive axle, and steering systems, along with detailed engine diagnostics for the Perkins Tier 2 Diesel Engine. With detailed illustrations, exploded diagrams, drawings, photos, and searchable content, this manual is an essential resource for owners, mechanics, and technicians to ensure optimal performance and longevity of the equipment.