This manual covers the Komatsu WA320-3 and WA320-3LE Wheel Loaders. These machines are engineered for efficient, economical, and safe operation and maintenance. Designed for a variety of tasks, they embody Komatsu's commitment to quality and reliability in heavy equipment. This comprehensive guide is intended to support the upkeep and performance of your WA320-3 or WA320-3LE. The scope of this Service Repair Manual and Operation & Maintenance Manual is extensive, providing detailed information on structure and function, testing and adjustment, disassembly and assembly, and maintenance standards. It includes crucial sections on safety, operation, troubleshooting, lubrication, and specifications, supported by diagrams and illustrations. This manual serves as an essential resource for owners, mechanics, and technicians to ensure the proper maintenance, servicing, and longevity of the Wheel Loader.