The Hitachi Zaxis ZX220W-3 is a robust hydraulic excavator engineered for demanding work environments. Built with Hitachi's commitment to quality and reliability, this wheeled excavator offers advanced Zaxis-3 generation technology. Its hydrostatic transmission with hydraulic control and 4WD drive type ensures efficient power delivery and maneuverability across various job sites. With an operating weight of approximately 22,000 kg, the ZX220W-3 is designed for substantial performance in construction, excavation, and material handling applications. This comprehensive WSM Service Repair Manual provides in-depth technical information for the Hitachi Zaxis ZX220W-3. It covers essential maintenance procedures, troubleshooting guides, detailed technical specifications, and critical safety guidelines. The manual is an indispensable resource for owners, mechanics, and technicians, offering the knowledge required to ensure the optimal performance, longevity, and safe operation of the excavator. All content is presented in English to facilitate understanding and application.