The Komatsu WA100-3-HW Wheel Loader, designed for robust performance and reliability, represents a significant advancement in heavy equipment engineering. This model, identified by serial numbers 63001 and up, is powered by the S4D102E-1H-SN engine (serial numbers 26200163-UP), ensuring efficient operation across a variety of demanding tasks. Its construction emphasizes durability and operator comfort, making it a trusted choice for construction, landscaping, and material handling applications. This Parts Catalogue Manual provides comprehensive documentation for the Komatsu WA100-3-HW Wheel Loader. It details a wide array of components, including engine-related parts, cooling and fuel systems, electrical and hydraulic systems, torque converter and transmission, main revolving frame, operator's compartment, suspension, work equipment, and more. Utilizing a graphic approach with words and images, this manual offers detailed parts information, installation guidance, and adjustment procedures, serving as an essential resource for maintenance and repair.