This diagram provides a detailed representation of the hydraulic system in the Hitachi Zaxis 450 excavator. It illustrates the flow paths, components, and connections within the hydraulic system, including the main hydraulic pump, control valves, actuators, cylinders, and auxiliary systems. The diagram helps in understanding the operation and function of each component, as well as the overall hydraulic flow and pressure distribution. This resource is essential for diagnosing and troubleshooting hydraulic issues, performing maintenance, and ensuring the efficient and safe operation of the excavator’s hydraulic systems.