1. Abnormal sound during braking
When you step on the brake, the brake system will produce severe metal friction.
This may be caused by foreign matters in the brake pad and corrosion on the brake disc.
2. The brake pedal travel becomes longer
When the brake is released, you will see a straight white dot.
The long braking stroke is mainly due to the air entering the braking system, lack of brake oil, possible leakage and serious wear of brake pads.
3. Braking deviation
Braking deviation is not very common, which mainly reflects the fact that the steering wheel is biased to one side when braking is applied.
This phenomenon may be caused by eccentric wear of brake pads and problems of brake cylinders.
4. Braking is becoming more and more difficult
Many cards have the problem of adding brakes. The main reason for strengthening the brake is the failure of the vacuum booster. There is no auxiliary braking, and the braking is often used.
5. Rebound of brake
Many card partners encounter this situation, but when the brake is applied, the upper limb will bounce back to the brake pedal, which is mainly due to the uneven surface of the brake disc. The gasket and steel ring are deformed.
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