The Komatsu WA900-3 Wheel Loader, designed for heavy-duty applications, represents a significant advancement in heavy equipment engineering. Built for reliability and performance, this model is engineered to meet the demanding requirements of various industrial and construction environments. Its robust construction and advanced features ensure efficient operation and longevity, making it a trusted choice for field assembly and operational tasks. This Field Assembly Manual provides comprehensive guidance for the assembly of the Komatsu WA900-3 Wheel Loader, serial numbers 50001 and up. It details all necessary procedures, including frame and axle assembly, piping and hose connections, electrical system setup, operator station installation, and attachment mounting. The manual also covers essential adjustments, engine procedures, and final inspections, serving as an indispensable resource for technicians and operators to ensure correct and safe assembly.