This service manual provides comprehensive information for the Hyundai HL757-7A and HL757TM-7A Wheel Loaders. These robust machines are engineered for demanding service workshop operations, offering a blend of reliability and performance. Their design emphasizes durability and efficiency, making them a trusted choice for a variety of heavy-duty tasks. The inclusion of a fuel warmer system further enhances their operational capabilities in challenging environments. The purpose of this manual is to serve as an authoritative guide for maintaining and repairing these Hyundai Wheel Loaders. It covers essential areas including the structure and function of key systems such as the power train, brake, steering, and work equipment. Detailed troubleshooting procedures, inspection and adjustment guidelines, disassembly and assembly instructions, and electrical system diagnostics are thoroughly explained. This resource is designed to assist owners, mechanics, and technicians in ensuring the optimal performance and longevity of their equipment.