Wheel bearing judges good or bad


With the improvement of car comfort, more and more peop […]

With the improvement of car comfort, more and more people complain about the abnormal noise of cars. How to quickly locate the source of abnormal noise from many noise sources and eliminate the abnormal noise has become an important issue in car maintenance. Let’s explain about the wheel hub. Some judgments of abnormal noise and installation methods of bearings.

What happens if the car wheel bearing is damaged.When one of the four wheel bearings of the vehicle is damaged, you will hear a continuous buzzing sound in the car during the driving process. This sound is unclear. Where did it come from? It feels like this humming sound is all over the cabin, and the higher the speed, the louder the sound.


Method 1: Open the car window and check whether the sound is coming from outside the car
Method 2: After increasing the vehicle speed (when the hum is louder), put the gear position in neutral and let the vehicle coast, and observe whether the noise comes from the engine. If the hum does not change when coasting in neutral, it is probably the wheel bearing problem
Method 3: Use the elevator to raise the car (release the handbrake before, put in neutral) and manually rotate the four wheels quickly. When encountering a problematic axle, it will make a sound, which is different from other axles to judge the problem .
Before installing the new bearing, apply grease first, and then install it in the reverse order. The replaced bearing must be flexible and free of miscellaneous and vibration.
Note: When installing, look at the front and back. The magnetic side faces the speed sensor. If it is installed backwards, it will turn on the ABS light or the anti-skid light.

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