The Hitachi ZAXIS ZX230 is a robust crawler excavator engineered for demanding construction and earthmoving applications. This model, powered by a 6.4 L direct injection diesel engine producing approximately 125 kW (168 hp) at 2000 rpm, features a hydrostatic transmission with a two-speed, variable displacement hydraulic motor for precise control. Its substantial operating weight of around 22,300 kg, coupled with a maximum digging depth of 6.65 m and a maximum reach of 10.03 m, makes it a versatile and powerful machine for a wide range of tasks. The ZAXIS ZX230 is designed for reliability and efficiency in challenging environments. This Service Repair Manual provides comprehensive guidance for the Hitachi ZAXIS ZX230 crawler excavator. It covers essential maintenance procedures, including detailed information on fluid capacities such as engine oil, coolant, fuel, and hydraulic oil. Technical specifications, operational data, and troubleshooting assistance are included to aid in the upkeep and repair of the machine. This manual is an indispensable resource for owners, operators, and service technicians seeking to ensure the optimal performance, longevity, and safety of their ZAXIS ZX230.