The Komatsu WA380-3MC WA380 Avance Plus wheel loader, designed for demanding operational environments, represents a significant advancement in heavy equipment engineering. Built with a robust turbocharged diesel engine and an advanced PowerShift transmission, this model offers reliable performance and efficiency for a wide range of material handling tasks. Its substantial operating weight, impressive lifting capacity, and ample bucket volume make it a versatile tool for construction, mining, and industrial applications. The ergonomic operator station, featuring ROPS/FOPS protection, further enhances productivity and operator comfort during extended use. This Service Repair Workshop Manual provides comprehensive guidance for the maintenance, repair, and servicing of the Komatsu WA380-3MC WA380 Avance Plus wheel loader. It covers essential procedures, technical specifications, and troubleshooting information necessary to ensure optimal performance and longevity of the equipment. Owners, operators, and technicians will find detailed instructions on engine maintenance, hydraulic system servicing, and component repair, alongside safety precautions and diagnostic routines. This manual is an indispensable resource for anyone responsible for the upkeep and operational integrity of this powerful wheel loader.