This manual covers the HITACHI HYDRAULIC EXCAVATOR ZAXIS ZX 135 US, a robust machine designed for demanding operational environments. Its engineering prioritizes reliability and efficiency, making it a trusted choice for various construction and excavation tasks. The ZAXIS series is recognized for its advanced hydraulic systems and operator-centric design, ensuring productivity and performance in diverse applications. This comprehensive service repair manual provides detailed information essential for the maintenance and repair of the HITACHI HYDRAULIC EXCAVATOR ZAXIS ZX 135 US. It includes technical data, circuit diagrams, and specific procedures for systems such as the fuel, chassis, cooling, engine, clutch, transmission, brakes, suspension, steering, and electrical systems. This manual is an indispensable resource for technicians and mechanics aiming to preserve the optimal condition and longevity of the equipment.