The Hitachi Zaxis 280 LCN 3 is a robust construction machine designed for demanding excavation and material handling tasks. Featuring a powerful Hino P11C-CS diesel engine with a gross power of 150 kW and a displacement of 7.2 L, this tracked hydraulic excavator is engineered for reliability and efficiency. Its substantial operating weight of 27,800 kg and impressive digging capabilities, including a maximum digging depth of 6660 mm and a maximum digging reach of 10100 mm, make it a versatile tool for various construction projects. This Workshop Service Repair Manual in English provides comprehensive guidance for mechanical technicians. It covers essential maintenance procedures, including engine oil and hydraulic filter change intervals, along with detailed technical specifications for the engine, transmission, and hydraulic systems. Furthermore, the manual offers troubleshooting information and safety guidelines to ensure the proper upkeep and efficient operation of the Hitachi Zaxis 280 LCN 3, helping to maintain its performance and longevity.