The Hitachi Zaxis 270-3 is a robust excavator designed for demanding construction and earthmoving applications. Featuring a powerful ISUZU AH-6HK1XPYA diesel engine with a displacement of 7.18 L and a gross power output of 152 kW (204 hp), this machine offers exceptional digging force and operational efficiency. Its hydrostatic transmission with multiple drive modes, including Power Mode and Economy Mode, ensures optimal performance across various tasks. With an operating weight of 27,100 kg and a maximum digging depth of 6.74 m, the Zaxis 270-3 is engineered for reliability and productivity in challenging environments, complemented by a ROPS and FOPS certified cabin offering enhanced operator comfort and safety. This Workshop Service Repair Manual provides comprehensive technical information for the Hitachi Zaxis 270-3. It covers essential maintenance procedures, including detailed specifications for engine oil, hydraulic fluid, coolant, and fuel capacities, alongside troubleshooting guidance and technical data for the undercarriage and hydraulic systems. The manual is intended for mechanical technicians and outlines repair processes, performance metrics such as travel and swing speeds, and key dimensions including maximum boom length. By consulting this English-language manual, users can ensure the proper upkeep, efficient operation, and longevity of their Zaxis 270-3 excavator.