The Komatsu WA320-3 Wheel Loader is engineered for demanding operational environments, offering robust performance and reliability. This model, designed for efficient material handling, incorporates advanced features such as an electronic controlled suspension system, auto-greasing system, auto-leveling, and a remote positioner to enhance operator control and productivity. Its construction prioritizes durability, ensuring consistent operation across various applications. This Operation & Maintenance Manual provides comprehensive guidance for the Komatsu WA320-3 Wheel Loader, serial numbers 50001 and up. It covers essential aspects including operation, handling, lubrication, maintenance procedures, and troubleshooting. The manual details service procedures, outlines wear parts, and specifies periodic replacement of safety-critical components. Additionally, it includes information on fuel, coolant, and lubricants based on ambient temperature, standard tightening torques, and available optional parts and attachments, serving as a vital resource for maintaining the vehicle's optimal performance and longevity.