2055361 Original Loader Parts Gearbox Spring Coil for Hitachi ZW150 ZW250 ZW310 ZW330

The Hitachi original loader gearbox spring coil (universal part number: 2055361, may correspond to internal number 163J2-55252) is an important elastic component in the transmission system of Hitachi wheel loaders. This part is mainly suitable for wheel loaders of Hitachi ZW150, ZW250, ZW310 and other models. It is usually installed in the gear set of the gearbox, drive axle, or wheel reducer, used for axial positioning, providing preload force, or buffering shock absorption.
 

The spring coil is a key functional component inside the gearbox, which mainly serves to provide precise axial preload for gears, bearings, or synchronizers, preventing axial movement of the components during operation; Absorb the impact and vibration generated during gear meshing and shifting, and protect other precision components; In some structures, it also serves as a support for the sealing ring or a positioning element for the retaining ring.

The core of maintaining a spring coil lies in regular inspection and preventive replacement. It is recommended to carefully inspect all spring coils during each gearbox or drive axle overhaul to see if there is permanent deformation, reduced elasticity, cracks, or rust. Once insufficient elasticity or shape change is found, it must be replaced immediately. Before installation, it is necessary to thoroughly clean the installation slot to ensure that there are no oil stains, metal shavings, or other impurities.