This document pertains to the Hyundai HL780-3A Wheel Loader, manufactured by Hyundai Heavy Industries. Designed for heavy-duty construction and material handling, this robust machine is engineered for demanding professional industrial applications. Its 4WD drivetrain ensures reliable performance across challenging terrains. This Workshop Service Repair Manual provides comprehensive guidance for the maintenance and repair of the Hyundai HL780-3A Wheel Loader. It covers essential procedures, technical specifications, and operational details necessary for optimal performance and longevity. This manual is an indispensable resource for owners, mechanics, and technicians seeking to ensure the continued reliability and efficiency of their equipment.