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How to diagnose the fault of automobile hub bearing

How to diagnose the fault of automobile hub bearing


Hub bearing is one of the key parts of automobile. Its main function is to bear the weight of the hub and provide accurate guidance for the rotation of the hub, which requires the hub to bear not only axial load, but also radial load.Hub bearings are also a simple but important automotive component that allows the wheels to rotate freely.

Damaged hub bearings should be replaced before use to avoid damage to the car and cause damage.

Noise: the hub bearings are worn and the driver can tell by the sound of the wheels.One manifestation of a bad hub bearing is rumbling noise.Noise often makes cars go faster.

Vibration: the vibration of damaged hub bearings can be felt in the car or on the steering wheel during rumbling.At higher speeds or corners, the noise is greater.

Test and repair: if defective hub bearings are found, safety tests should be carried out to improve wheel rotation.The wheel turns smoothly.It is normal not to slide to the side.If the parts that need to be replaced are relatively inexpensive, repairs are less complicated and often more time-consuming.

How do I find axle bearing noise?

Wheel bearing is the most important and invisible part of vehicle power transmission system.When they start to fail, the hub bearings usually whine, which you can sense from the steering wheel or the car chassis.Bearing noise is very bad, which allows us to find the problem as soon as possible.Fortunately, the solution is to listen, to every corner of your car.

Here's how:

Find a large, open parking lot, drive 45 miles an hour, and turn in the parking lot.

Hit the brakes as if you were panicking and parked in the car."The front of the car plummets and the weight shifts to the front, putting more pressure on the bearings.Then listen to your axle, if it turns up the volume, then you have a bad front bearing.If it gets quieter or disappears, then you have a bad rear bearing.

Drive at 45 miles an hour, turn clockwise first, and you'll be holding the weight of the car by the driver's side.If the bearings become noisy, the defective bearings are in the driver's seat.Then repeat in the counterclockwise direction. If the bearing becomes noisy, the bearing on the passenger side will break down.

If you find an increase in the noise or vibration of the bearing, the defective bearing is on the front passenger side.If the noise of the bearing increases while braking and reducing the bearing, then the bad bearing is on the side of the rear wheel drive.

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