The Hitachi Zaxis 280LC-3 is a robust excavator designed for demanding construction and earthmoving applications. This LC-3 Series model, powered by an Isuzu AA-6BG1TRP turbocharged engine with a displacement of 6.49 L and an output of 150 kW at 2000 rpm, features a common rail direct injection fuel system. Its hydrostatic 4WD transmission and substantial operating weight of 28,500 kg contribute to its stability and power. With a maximum digging depth of 6920 mm and a reach of 10270 mm, the Zaxis 280LC-3 is engineered for efficiency and reliability in challenging environments. This Workshop Service Manual provides comprehensive technical information for the Hitachi Zaxis 280LC-3. It covers essential maintenance procedures, including fluid capacities and service schedules like engine oil filter replacement every 500 hours. Detailed specifications for the hydraulic system, engine, and transmission are included, alongside operational dimensions and performance data. This manual serves as an indispensable resource for owners, mechanics, and technicians, enabling effective maintenance, troubleshooting, and repair to ensure the optimal performance and longevity of the equipment.