The Hitachi Zaxis 240-3 is a robust excavator engineered for demanding construction and earthmoving applications. Featuring a powerful Hino J05E-TS turbocharged diesel engine with a displacement of 5.12 L, this machine delivers 121 kW (162 hp) of gross power, ensuring efficient operation. Its tracked drivetrain provides stability and maneuverability across various terrains, with travel speeds ranging up to 5.5 km/h. The excavator boasts a substantial operating weight of 23,600 kg and is designed with a focus on reliability and performance, offering a maximum digging depth of 6,610 mm and a standard bucket capacity of 1.0 m³. Safety is paramount, with a ROPS/FOPS certified cab and an emergency stop system included. This Service Repair Workshop Manual in English is designed for mechanics and technicians, providing comprehensive guidance for the maintenance and repair of the Hitachi Zaxis 240-3 excavator. It covers essential operational procedures, detailed troubleshooting steps, and critical technical specifications, including engine details, lubrication capacities for engine oil, hydraulic oil, and coolant, and hydraulic system performance metrics. By utilizing the information within this manual, owners and service professionals can ensure the optimal performance, longevity, and safety of their equipment through proper upkeep and timely repairs.