This Service Repair Manual covers the Hyundai HL780-9A Wheel Loader, a robust machine designed for demanding operational environments. Built with engineering quality and reliability in mind, the 9A Series represents a significant advancement in wheel loader technology. Its powerful performance, substantial dimensions, and efficient powertrain, including an Automatic Power Shift Transmission and 4-wheel drive, make it suitable for a wide range of heavy-duty tasks in construction, mining, and material handling. The HL780-9A is engineered to deliver consistent productivity and durability, establishing itself as a dependable asset for any operation. This comprehensive manual provides essential information for maintaining and repairing your Hyundai HL780-9A Wheel Loader. It details critical maintenance procedures, including recommended service intervals for engine oil and hydraulic oil, along with lubrication requirements. The manual also covers technical specifications, system overviews for the brake, steering, and electrical systems, and information on the powertrain and work equipment. By following the guidelines within this English-language document, owners, mechanics, and technicians can ensure optimal performance, longevity, and safety of the equipment.