This document pertains to the Hyundai HL770-7A Wheel Loader, a versatile machine engineered for demanding construction and material handling applications. Built with Hyundai's commitment to quality and reliability, this wheel loader is designed to deliver robust performance and efficiency in various operational environments. Its advanced engineering ensures dependable service, making it a valuable asset for any project requiring powerful and precise material movement. This comprehensive workshop service repair manual provides essential information for the maintenance and repair of your Hyundai HL770-7A Wheel Loader. It covers a wide range of topics, including detailed routine preventive maintenance procedures, engine system specifications and troubleshooting, power train system diagnostics and repair, brake system operation and servicing, steering system maintenance, and work equipment servicing. Additionally, the manual includes detailed information on the electrical system, component locations, circuits, and troubleshooting. This resource is designed for users of all levels, from first-time owners to professional technicians, ensuring that your wheel loader remains in optimal working condition.