4714260120 Original Loader Gearbox Gasket for ZW370-6

The original gearbox gasket part number 4714260120 (often labeled as KC4714260120) is a key sealing component for the gearbox of Hitachi ZW370-6 large wheel loader. It is mainly suitable for ZW370 series models such as ZW370, ZW370-5A, ZW370-5B, ZW370-6, etc. It is used for the joint surface, end cover or bearing seat of the gearbox housing, and plays a core sealing role in preventing gear oil leakage and isolating dust and impurities. This universal number is its only original factory identification. When ordering, the complete model number, serial number, and installation position of the equipment must be provided to ensure that the outer dimensions, thickness, and bolt hole positions of the gasket are fully matched with the gearbox.

This product belongs to the category of oil resistant sealing gaskets, usually made of asbestos free fiber-reinforced rubber (such as AFM30, ST-2058, etc.) or oil resistant asbestos rubber sheets. It has excellent resistance to gear oil (including GL-5 heavy-duty gear oil) corrosion, high temperature resistance (up to 300 ℃ in the short term), pressure resistance (up to 8-12.5MPa), and good compression resilience (compression rate 7-25%, rebound rate ≥ 50%). Its structure is flat and may have a metal skeleton reinforcement or anti sticking coating. The thickness is commonly 0.5mm, 1.0mm, 1.5mm, etc. The surface is smooth and flat to ensure a tight fit of the sealing surface. Under high temperature, high pressure, and vibration conditions of ZW370-6 ZF or Allison transmission, it can maintain long-term sealing reliability and prevent gear wear or pollution caused by oil leakage.

Check for oil leakage on the mating surface of the gearbox every 250 hours of operation, and monitor for any abnormal noise from the gearbox (possibly due to gasket failure causing insufficient oil). Replacement timing: When the gasket shows obvious crushing deformation, hardening and brittle cracking, surface cracking, or oil stains on the sealing surface, it must be replaced immediately. It is recommended to replace the gasket synchronously every time the gearbox is overhauled or the gear oil is changed (approximately 2000 working hours). The original factory warranty is usually 12 months or 1000 working hours (whichever comes first), but specific policies need to be consulted with authorized dealers, and the warranty generally does not cover failures caused by improper installation or expired use.