1. Abnormal sound when braking
When you step on the brake, the brake system will cause strong metal friction.
The cause may be foreign matter on the brake pads or rust on the brake discs.
2. The stroke of brake pedal becomes longer
As the brakes soften, you'll see straight white spots.
The longer brake stroke is mainly due to air entering the brake system, lack of brake oil, possible leakage and serious wear of brake pads.
3. Braking deviation
Brake slip is less common, mainly reflecting the fact that the steering wheel bends to one side when the brake is applied.
This phenomenon may be caused by eccentric wear of brake pad and problems of brake cylinder.
4. Braking is more and more difficult
Many cards have the problem of increasing braking. The main reason for strengthening the brake is the failure of the vacuum booster. The brake is not auxiliary, and the brake is often used.
5. Brake rebound
Many card partners have encountered this situation, but when braking, there will be a phenomenon, in which the upper limb bounces from the brake pedal, mainly due to the uneven surface of the brake disc. Deformation of gasket and steel ring
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