This service manual covers the LINDE IC Engined Fork Truck 350 Series, specifically models H 12, H 16, H 18, and H 20, equipped with D-03 or T-03 designations and LINDE Hydraulic Control (LHC). It details vehicles fitted with either the 1781 cc 4-cylinder VW ADF petrol engine or the 1896 cc 4-cylinder VW ADG diesel engine. These robust industrial trucks are engineered for demanding operational environments, emphasizing reliability and efficient material handling. This comprehensive manual provides essential information for the maintenance, repair, and servicing of your LINDE forklift. It includes detailed procedures for engine systems, transmission, hydraulic controls, brake systems, electrical components, and steering. With step-by-step instructions, diagnostic information, troubleshooting guides, and schematic diagrams, this resource is designed to assist both novice owners and experienced technicians in ensuring the optimal performance and longevity of their equipment.