1. If the hub bearing fails, there will be a noticeable buzzing sound at 60-80 hrs. This sound is different from the tire noise. We can judge whether the wheel bearing is loose by controlling the left and right swing of the body, because it will change the sound level as the body swings.

2. When the wheel hub bearing is worn and loosened to a certain extent, shaking the tire vertically up and down can feel the gap, and shaking the tire left and right is to check whether the steering gear is loose, so why the daily maintenance operation shakes the tire is to detect the bearing and direction Whether the machine is worn.

Wheel Hub Bearing

3. For the wheel hub bearing of the third-generation integrated sensor, if its sensor fails, the ABS lights, EPS lights, etc. will be lit. Of course, not all ABS lights are lit because the bearing is broken. Some wheel speed sensors and bearings are. divided.

4. There is also a failure phenomenon, that is, the high-speed vibration of the body. There are many reasons for this failure phenomenon, including vibration caused by poor wheel bearings.

Now many automobile wheels, especially the bearings installed in passenger cars, are maintenance-free bearings. This kind of bearing also needs to be lubricated, but it belongs to closed internal lubrication. Because the lubricating oil inside the bearing unit is of good quality, it can achieve the title of maintenance-free for life. Don't be naive to think that lubrication is not required!