This Service Shop Repair Manual provides comprehensive information for the Komatsu WA380-1LC Wheel Loader, covering serial numbers A45001 and up. Engineered for demanding applications, this robust machine is built with Komatsu's renowned quality and reliability. Its powerful diesel engine, coupled with a likely power-shift transmission and 4WD drivetrain, ensures efficient operation in various work environments. Key features include an articulated frame for superior maneuverability and a comfortable operator station designed for productivity. This manual serves as an essential resource for maintaining and repairing the Komatsu WA380-1LC. It details all aspects of the vehicle, including engine components, powertrain, chassis, hydraulic systems, braking, and electrical systems. With extensive coverage of servicing, preventative maintenance, troubleshooting, testing, adjustment, and removal/installation procedures, this English-language manual is an indispensable tool for owners, mechanics, and technicians. It is presented with detailed illustrations, exploded diagrams, drawings, and photos to facilitate understanding and accurate service.