The Hitachi Zaxis ZX220W-3 is a robust Hydraulic Excavator from the Zaxis-3 generation, engineered for demanding construction and industrial applications. This model features a powerful Cummins QSB6.7 turbocharged diesel engine with a displacement of 6.7 liters, delivering 125 kW (168 HP) of net power and 712 Nm (525 lb-ft) of max torque. Its hydrostatic 4WD drive system, coupled with a substantial operating weight of 22,400 kg, ensures excellent traction and stability. The machine boasts impressive performance metrics, including a maximum digging depth of 6,550 mm and a standard bucket capacity of 1.0 m³, making it a reliable and efficient tool for various heavy-duty tasks. The ROPS and FOPS certified cabin prioritizes operator safety and comfort. This Service and Repair Manual provides comprehensive guidance for all service aspects of the Hitachi Zaxis ZX220W-3 Hydraulic Excavator. It covers essential maintenance procedures, detailed troubleshooting steps, and critical technical specifications, including engine oil, hydraulic oil, and coolant capacities. Furthermore, the manual includes information on the machine's dimensions, performance capabilities, and safety features. Its purpose is to equip owners, mechanics, and technicians with the knowledge necessary to perform routine maintenance, diagnose issues, and execute repairs effectively, ensuring the longevity and optimal performance of the Zaxis ZX220W-3.