The Hyundai HL770A Wheel Loader is a robust piece of heavy equipment engineered for demanding construction and material handling applications. Designed with reliability and performance in mind, this model typically features a powerful Cummins QSB6.7 diesel engine, delivering approximately 217 net horsepower and peak torque of 900 Nm. Its substantial operating weight of around 23,900 kg, a standard 4.0 m³ bucket capacity, and a 4WD automatic powershift transmission system enable efficient operation in various work environments. The articulated steering, with a 35-degree articulation angle, further enhances its maneuverability and operational versatility. This Workshop Service Repair Manual provides the most complete OEM practical service and repair information for the Hyundai HL770A Wheel Loader. It is meticulously compiled to assist owners, mechanics, and technicians in maintaining and repairing the equipment. Key areas covered include detailed maintenance procedures, troubleshooting guidance, comprehensive technical specifications, and essential safety guidelines. By consulting this manual, users can ensure optimal performance, longevity, and safe operation of their Hyundai HL770A.