This workshop service repair manual covers the Hitachi Zaxis 30U-2 series excavator, a compact and versatile machine designed for various construction and excavation tasks. Engineered for reliability and performance, this model features a robust diesel engine with a displacement of 1.642 L, delivering 24.2 kW (32.8 HP) at 2200 rpm, coupled with a hydrostatic transmission for precise control. Its compact dimensions, including an operating weight of 2990 kg and a width over tracks of 1550 mm, make it suitable for confined job sites. Notable digging capabilities include a maximum depth of 2820 mm and a reach of 4725 mm, supported by a bucket capacity ranging from 0.08 to 0.11 m³. This comprehensive English-language manual provides detailed information essential for the maintenance and repair of your Hitachi Zaxis 30U-2 excavator. It includes in-depth procedures for servicing, technical specifications, troubleshooting guides, and safety recommendations. With hundreds of pages of official factory-provided content, this manual is an indispensable resource for owners, technicians, and mechanics aiming to ensure the optimal performance, longevity, and safe operation of the equipment. The manual covers critical aspects such as engine oil, hydraulic oil, coolant, and fuel capacities, alongside detailed operational parameters.