This workshop service manual covers the Hitachi Zaxis ZX 270-3 excavator, a robust machine engineered for demanding work environments. Built with precision and designed for reliability, this excavator features a powerful HINO J08E diesel engine delivering 150 kW gross power and 712 Nm of peak torque, supported by a hydraulic system with a main relief pressure of 34.3 MPa. Its substantial operating weight of 26,800 kg and impressive gradeability of 70% make it suitable for a wide range of construction and earthmoving applications, ensuring efficient performance and durability. This comprehensive English-language manual, spanning 699 pages, provides essential information for maintaining and repairing the Hitachi Zaxis ZX 270-3. It includes detailed step-by-step repair instructions, diagnostic information, troubleshooting guides, and extensive technical data such as service specifications and tightening torques. With the inclusion of pictorial diagrams, exploded views, and photos, this manual is an invaluable resource for mechanics and DIY individuals alike, enabling them to effectively service and preserve the operational integrity of their equipment.