Mount bearing: replacement and selection

When and why it is necessary to replace mount bearing

Manufacturers do not set exact time period, at the end of which the mount bearing should be replaced. The component needs to be replaced at abrasive wear-out, mechanical damages and appearance of free movement or corrosion spots. Moreover, the part is replaced due to cracking or elasticity loss of its rubber part.

Oxidation and abrasive wear-out of the car part are the result of ingress of sand and moisture. During this, if there is no lubricant in the bearing, it will break down even faster. Mechanical damages and free movement of the car part can be the result of aggressive driving style or consequence of car operation on roads with poor-quality surface. In some cases, jamming of the component can be caused by shock strut defects.

A broken down mount bearing is indicated by knocking and rustling sounds in the shock struts area during car driving. This sounds are clearly audible at maneuvers performing, at loaded car operation and during driving along a rough road. Moreover, road-holding ability significantly worsens at defectiveness of the part at straightforward driving as well as at cornering.

Replacement of this part should be performed at a service station, as the procedure requires a lifting device and special tools.