This workshop service and repair manual covers the HYUNDAI HDF 15-III and HDF 18-III forklift trucks, equipped with the 2.2L 4-cylinder ISUZU 4LE1PW-06 diesel engine. These robust machines are engineered for demanding industrial applications, offering reliable performance and efficient operation. Their construction prioritizes durability and ease of maintenance, ensuring consistent productivity in various material handling environments. This comprehensive manual provides detailed information essential for the maintenance, repair, and troubleshooting of your HYUNDAI forklift. It includes general information, safety precautions, technical specifications, lubrication charts, and extensive procedures for component removal and installation. Coverage extends to all major systems, including the powertrain, hydraulic systems, braking, steering, and electrical systems, with specific sections dedicated to mast and carriage assemblies. Diagnostic procedures, along with hydraulic and electrical wiring diagrams, are also included to assist both owners and professional technicians in keeping the forklift in optimal working condition.