This Service Repair Workshop Manual provides comprehensive information for the Hyundai HL780-9A Wheel Loader. Engineered for demanding operational environments, this heavy-duty equipment is built for reliability and performance. Its robust design and advanced features ensure efficient material handling across various applications. This manual serves as an essential resource for understanding and maintaining the integrity of this powerful machinery. The scope of this manual is extensive, covering all critical aspects necessary for the upkeep and repair of the Hyundai HL780-9A. It includes detailed procedures for engine systems, power train, brake and steering systems, and work equipment, along with in-depth coverage of the electrical system. With hundreds of photos and illustrations, this highly detailed guide is designed to assist both do-it-yourself enthusiasts and experienced mechanics in performing maintenance, troubleshooting issues, and completing complex repairs with confidence.