This Service Repair Manual provides comprehensive information for the Hyundai HL780-9A Wheel Loader. Engineered for demanding applications, this model represents a commitment to robust performance and operational efficiency. Its design prioritizes reliability and durability, making it a dependable choice for various industrial and construction tasks. The HL780-9A is built to handle challenging environments, offering advanced features that enhance productivity and user experience. This manual serves as an essential resource for maintaining and repairing the Hyundai HL780-9A Wheel Loader. It covers critical areas including engine maintenance, power train, brake system, steering system, work equipment, and the electrical system. Detailed procedures for structure and function, operational checks, troubleshooting, testing, adjustments, disassembly, and assembly are provided. Additionally, general maintenance guidelines, safety hints, and specifications are included to ensure the vehicle operates at peak performance and longevity.