This Field Assembly Manual provides comprehensive guidance for the Komatsu WA900-3LC Wheel Loader, serial numbers A50001 and up. Engineered for demanding applications, this machine represents a significant advancement in heavy equipment technology, offering robust performance and exceptional durability. Its design prioritizes operational efficiency and reliability, making it a trusted choice for challenging construction and material handling tasks. This manual serves as an essential resource for assembling, maintaining, and understanding the WA900-3LC. It details assembly procedures, including step-by-step instructions, required tools, and workspace layout, alongside crucial information on testing, inspection, and transportation. Technical specifications, refill capacities, and dimensions are also included, ensuring that operators and technicians have all the necessary data to keep this powerful wheel loader in optimal working condition.