Car wheel bearings are maintained twice and once. Car wheel bearings are a component that reduces the load friction coefficient and fixes them during the operation of the car. It seems insignificant, but it has a certain guarantee for driving safety. Therefore, car wheel bearing maintenance Still cannot be ignored.
For driving safety, car wheel bearings must be checked, cleaned and lubricated regularly. First, jack up the end of the car that needs to be inspected and support it on the safety support. If the rear wheel is to be inspected, the parking brake should be disengaged first, and the wheel should be rotated by hand. Under normal circumstances, the wheels should rotate smoothly, without ear-piercing friction and "cracking" sounds. When listening to the sound, do not confuse the scraping sound of the brake pad with the brake disc and the noise of the bearing rotation, so as to avoid misjudgment.
Check the wheel bearing nuts, make sure they are tight. To do this, grab the top and bottom of the tire and shake the wheel in and out, no noticeable wobble should be felt. If it feels a little loose or uncomfortable, or the vehicle has driven 50,000 kilometers without cleaning and changing the grease for the bearing, it should be disassembled for inspection. The bearing nut is fixed by the cotter pin, which should be taken out and discarded, and replaced with a new cotter pin. If the car bearing is secured with a special locknut, use a punch to loosen it from the groove in the axle. When reassembling, it is better to use a new nut. Unscrew the nut with a socket wrench, shake the wheel and take out the retaining ring and outer bearing.
Thoroughly clean all parts with detergent, put the cleaned bearings on a clean cloth and let them dry naturally. Carefully inspect each roller and roller cage, and inspect the outer race of the bearing. If there is deep scratching, spalling or heat discoloration on the rollers or races, the bearing must be replaced.
