4735467 Original Hitachi Loader Oil Seal for ZW310

The Hitachi loader original oil seal with part number 4735467 is a Hitachi factory certified seal. It is mainly designed for Hitachi ZW series wheel loaders, such as ZW220, ZW250, ZW310, ZW330 and other common models, and is specifically suitable for rotary shaft seals in engines, transmissions, drive axles or hydraulic systems. Due to the different installation positions of oil seals (such as crankshaft front oil seal, half shaft oil seal, rotary reducer oil seal, etc.), there are differences in their precise adaptability. Before procurement, it is necessary to provide the specific model and serial number of the equipment, as well as a description of the installation position of the oil seal or photos of the old parts, for final confirmation.

As the original oil seal, 4735467 is made of high-quality oil resistant synthetic rubber and metal frame composite, ensuring long-term reliable sealing under harsh working conditions such as heavy load, high temperature, and high dust in loaders. Its structure usually includes a main sealing lip, a dust-proof lip, and a built-in spring coil, which can effectively prevent the leakage of lubricating oil and hydraulic oil, and block the invasion of external pollutants such as dust and mud. The original parts are strictly controlled in terms of dimensional accuracy to ensure precise interference fit with the shaft and seat holes, and are not prone to eccentric wear or looseness after installation. Its design has a wide working temperature range (usually -40 ° C to+150 ° C or above), good pressure resistance, and can adapt to system pressure fluctuations and high-speed shaft rotation. It is the core component that ensures stable long-term operation of key components.

The maintenance core of this oil seal lies in regular inspection, standardized installation, and preventive replacement. Daily inspection: It is recommended to check the joint surface and shaft end of each assembly housing for oil stains or continuous leakage every 250 working hours. This is the most direct sign of oil seal failure. Timing of replacement: When the sealing lip rubber is found to have hardened, cracked, worn, or deformed, or when the spring has fallen off or lost its elasticity, it should be replaced immediately. Standardized installation: When replacing, the shaft neck and mounting seat hole must be thoroughly cleaned to remove all burrs, rust, and old oil seal residue; Apply an appropriate amount of specified lubricating oil or grease to the outer ring and lip of the oil seal; Use specialized installation tools or appropriately sized sleeves to evenly apply pressure along the axial direction to press the oil seal into place. It is strictly prohibited to strike or tilt the installation; Ensure that the installation direction of the oil seal is correct (usually with the spring side facing the oil side).