This manual covers the Hitachi Zaxis 270-3 hydraulic excavator, a robust machine from the Zaxis-3 Series. Engineered for demanding construction and earthmoving applications, this excavator combines powerful performance with operational efficiency. Its design prioritizes reliability and durability, making it a dependable choice for various heavy-duty tasks. The Zaxis 270-3 features a potent Isuzu AA-6HK1X diesel engine, delivering 150 kW (201 hp) of power, coupled with a hydrostatic transmission and four-wheel drive for optimal traction and control. With an operating weight of approximately 26,900 kg and impressive dimensions, it is built to handle substantial workloads. This comprehensive Full Service Repair Manual in English provides detailed information essential for the maintenance and repair of your Hitachi Zaxis 270-3. It covers critical areas including engine specifications, transmission systems, fluid capacities for engine oil, hydraulic oil, coolant, and fuel, along with guidance on filter replacement intervals. The manual is designed to assist owners, technicians, and mechanics in understanding the machine's systems, performing routine servicing, and addressing potential issues, thereby ensuring the longevity and optimal performance of the hydraulic excavator.