The Hitachi ZX270LC-3 is a robust excavator from the ZX-3 Series, engineered for demanding construction and earthmoving applications. This machine features a powerful Isuzu AA-6BG1T turbocharged diesel engine, displacing 6.5 liters and producing 145 kW (195 hp) at 2000 rpm, meeting Tier 3 / EU Stage IIIA emission standards. Its hydraulic drive system with variable displacement motors ensures efficient power transfer, while its substantial operating weight of 26,100 kg and impressive digging capabilities, including a maximum digging depth of 6.71 meters and a standard bucket capacity of 1.20 m³, highlight its performance and reliability in challenging environments. This Service Repair Workshop Manual provides comprehensive technical information for the Hitachi ZX270LC-3 Excavator. It covers essential areas including detailed maintenance procedures, troubleshooting guidance, technical specifications, and crucial safety guidelines. Designed for mechanics and technicians, this manual serves as an indispensable resource for performing routine servicing, complex repairs, and ensuring the optimal operational performance and longevity of the ZX270LC-3. All information is presented in English to facilitate understanding and application.