The Hitachi ZAXIS ZX330 is a robust Crawler Excavator engineered for demanding construction and earthmoving applications. Featuring a powerful Isuzu AH-6HK1X diesel engine with a displacement of 7.8 L, it delivers 246 horsepower and 932 Nm of torque, meeting EPA Tier 3 and EU Stage IIIA emission standards. Its hydrostatic drive system provides efficient power transfer, enabling travel speeds up to 5.1 km/h. With an operating weight of 32,300 kg and a standard bucket capacity of 1.5 m³, the ZAXIS ZX330 is designed for exceptional digging performance, reaching depths of 7.12 m and offering a maximum digging reach of 10.67 m. This Service Repair Manual provides comprehensive guidance for the Hitachi ZAXIS ZX330 Crawler Excavator. It covers essential maintenance procedures, including recommended intervals for engine oil and hydraulic filter replacement, along with fluid capacity specifications for engine oil, hydraulic oil, coolant, and fuel. Detailed technical specifications, troubleshooting information, and safety guidelines are included to assist owners, mechanics, and technicians in maintaining the vehicle's optimal performance and longevity. The manual is presented in English.