YA40018288 Loader Oil Pipe for ZW220-5A 

The Hitachi original loader oil pipe (universal part number: YA40018288) is a key pipeline component in the hydraulic system of Hitachi wheel loaders. This original oil pipe is mainly suitable for multiple Hitachi wheel loaders, with common models including ZW140, ZW180, ZW220, ZW250, ZW310, ZW330, ZW370-G, ZW550-G, etc. It is usually used to connect core components such as hydraulic pumps, multi way valves, and oil cylinders, responsible for the transmission of high-pressure hydraulic oil.
 

As the "blood vessel" of the hydraulic system, the core function of this oil pipe is to safely and reliably transport hydraulic oil under high pressure, and drive the working device to complete various actions. As an original component, it adopts a high-quality multi-layer steel wire reinforced rubber hose structure, usually with an inner layer of hydraulic oil resistant synthetic rubber, a middle reinforcement layer of high-strength steel wire weaving or winding, and an outer layer of wear-resistant and weather resistant synthetic rubber or polyurethane sheath.
 

The core of oil pipe maintenance lies in regular inspection, correct installation, and preventive replacement. It is recommended to conduct a visual inspection before starting up or every 8 hours of operation, focusing on checking whether there are bulges, cracks, cuts, wear (especially at the contact and friction points with the vehicle body), and leaks at the joints of the oil pipe outer layer. To avoid excessive bending, twisting, or contact with sharp edges and corners of the oil pipe, sufficient length allowance should be left during installation to accommodate equipment movement. Regularly check whether the pipe clamp is loose, ensure that the oil pipe is firmly fixed, and reduce vibration and wear.