This manual covers the Hyundai HL770-7A Wheel Loader, a robust piece of industrial equipment designed for demanding tasks. Engineered for reliability and performance, this wheel loader represents a significant advancement in its class, offering advanced features to enhance operational efficiency and user experience. Its construction quality ensures durability in challenging environments, making it a trusted choice for various construction and material handling applications. This comprehensive Service/Workshop Manual, presented in English, provides detailed information essential for the maintenance and repair of the Hyundai HL770-7A. It includes in-depth coverage of the power train, axle, brake, steering, and work equipment systems, detailing their structure, function, troubleshooting procedures, maintenance adjustments, and disassembly/assembly processes. Additionally, the manual offers guidance on the electrical system, including component locations, circuit diagrams, and specifications, alongside general machine specifications and safety guidelines, empowering owners and technicians to keep the equipment in optimal working condition.