This manual pertains to the Hyundai HL780-7A Wheel Loader, a robust piece of equipment engineered for demanding operational environments. Designed with a focus on reliability and performance, the HL780-7A incorporates advanced diesel engine technology and a sophisticated power train system. Its construction emphasizes durability and efficiency, making it a suitable choice for a wide range of heavy-duty applications where consistent power and operational integrity are paramount. The purpose of this comprehensive Service Repair Workshop Manual is to provide detailed technical information for the maintenance, diagnosis, and repair of the Hyundai HL780-7A Wheel Loader. It covers essential areas including safety guidelines, general specifications, engine details, power train, brake system, steering system, work equipment, and the electrical system. Owners, technicians, and mechanics will find step-by-step procedures, troubleshooting guides, and technical data necessary to ensure the optimal performance and longevity of the equipment.