This Service Shop Repair Manual provides comprehensive information for the Komatsu WA-320-1LC, designed for robust performance in demanding work environments. Engineered for reliability and efficiency, this model represents a significant advancement in heavy equipment technology. Its robust construction and advanced systems ensure optimal operation and longevity, making it a trusted choice for various industrial and construction applications. This manual serves as an essential resource for maintaining and repairing the Komatsu WA-320-1LC, covering serial numbers A25001 and up. It details essential maintenance procedures, troubleshooting guides, and technical specifications across all major systems, including the engine, powertrain, hydraulics, braking, steering, cooling, fuel, and electrical systems. With detailed illustrations and step-by-step instructions, this English-language manual empowers owners, mechanics, and technicians to perform diagnostics, repairs, and preventative maintenance effectively, ensuring the equipment remains in peak operational condition.