This manual pertains to the Hyundai HLF15/18C-3 Forklift Truck, a robust piece of industrial equipment from a globally recognized manufacturer. The HLF15/18C-3 represents a specific iteration within Hyundai's forklift product line, engineered for reliability and efficiency in various material handling applications. While specific production years are not detailed, the model's designation suggests a focus on load capacities around 1500-1800 kg. The forklift's design prioritizes operational effectiveness, with comprehensive coverage of its powertrain, brake system, steering system, hydraulic system, electric system, and mast assembly. This comprehensive Service Repair Manual is designed to provide detailed guidance for maintaining and repairing the Hyundai HLF15/18C-3 Forklift Truck. It covers essential areas including general specifications, periodic maintenance schedules, and detailed procedures for disassembly, assembly, testing, and adjustment of all major components and systems. The manual includes extensive troubleshooting guides for common issues across the powertrain, brakes, steering, hydraulics, and electrical systems, supported by high-quality diagrams to aid understanding. Its scope is intended to empower both Do-It-Yourselfers and professional mechanics in effectively servicing and repairing the forklift, ensuring optimal performance and longevity.