This Service Shop Repair Manual covers the Komatsu WA320-6 (KA SPEC.) Wheel Loader, a robust machine engineered for demanding operational environments. Featuring a Komatsu SAA6D107E-1 turbocharged, aftercooled, diesel engine with a displacement of 6.7 liters, this wheel loader delivers reliable performance with a gross power of 163 HP. Its design prioritizes durability and efficiency, making it suitable for a wide range of construction and material handling tasks. The manual details its substantial operating weight of 21,760 kg and impressive bucket capacity of 3.1 m³, highlighting its capability in heavy-duty applications. This comprehensive 1281-page English language manual provides detailed step-by-step instructions for repair, servicing, technical maintenance, and troubleshooting of the Komatsu WA320-6 wheel loader. It includes actual photo illustrations, diagrams, and schemes to facilitate understanding and execution of procedures. The manual is structured to assist technicians and owners of any skill level in effectively maintaining and repairing the equipment, ensuring optimal performance and longevity. Key sections cover specifications, structure and function, testing and adjusting, troubleshooting, and diagrams, empowering users to perform necessary tasks and potentially save on repair costs.