The Hitachi Zaxis ZX 280LCN-3 is a robust excavator designed for demanding construction and earthmoving applications. This third-generation model features a powerful Isuzu diesel engine with a displacement of 7.8 liters, delivering 144 kW (193 hp) of net power and 764 Nm (564 lb-ft) of maximum torque. Its hydrostatic transmission with a 2-speed travel motor ensures efficient power delivery and maneuverability across various terrains. With an operating weight ranging from 28,000 to 28,400 kg, and impressive dimensions including a length with bucket of 10.59 meters and a digging depth of up to 6.77 meters, the ZX 280LCN-3 is engineered for productivity and reliability. This Workshop Service Manual provides comprehensive guidance for the maintenance and repair of the Hitachi Zaxis ZX 280LCN-3 excavator. It covers essential areas including detailed maintenance procedures, troubleshooting diagnostics, technical specifications for all major systems such as the engine, hydraulics, and undercarriage, as well as critical safety guidelines. With 699 pages of information in English, this manual is an indispensable resource for owners, mechanics, and technicians seeking to ensure the optimal performance, longevity, and safe operation of their equipment.