This service repair manual covers the Hyundai HBF15T-5 and HBF18T-5 forklift trucks. These machines are designed for material handling operations, representing Hyundai's commitment to robust engineering and reliable performance in industrial environments. While specific production years are not detailed, the manual focuses on the comprehensive technical aspects essential for maintaining these forklifts. This manual provides extensive information for owners, operators, and maintenance personnel. It details maintenance procedures, assembly and disassembly processes, servicing, repair, diagnostics, and troubleshooting for all major systems, including the power train, brake, steering, hydraulic, electric, and mast systems. With step-by-step repair operations, detailed troubleshooting guides, and real photo illustrations, this resource is designed to empower users to perform repairs efficiently, saving time and money.