Brake pads emit sharp noise may be caused by a variety of factors, the following are some of the main reasons and the corresponding explanation:
Excessive wear:
When the brake pads wear out, their backplates may come into direct contact with the brake discs, and this metal-to-metal friction can produce a sharp noise.
Brake pads wear to not only produce noise, but also seriously affect the braking effect, so the brake pads should be replaced in time.
Uneven surface:
If there are bumps, dents or scratches on the surface of the brake pad or brake disc, these unevenness will cause vibration during the braking process, resulting in screams.
The brake pad or brake disc is trimmed to ensure that its surface is smooth, which can reduce vibration and noise caused by unevenness.
Foreign body intervention:
If foreign objects such as small stones and iron filings enter between the brake pad and the brake disc, they will produce abnormal noises during friction.
In this case, foreign objects in the brake system should be carefully checked and cleaned to keep them clean to reduce abnormal friction.
Moisture effects:
If the brake pad is in a wet environment or water for a long time, the coefficient of friction between it and the brake disc will change, which may also lead to the appearance of screams.
When the brake system is found to be wet or water stained, it should be ensured that the system is dry to avoid changes in the coefficient of friction.
Material problem:
Some brake pads may ring abnormally when the car is cold, and return to normal after the hot car. This may have something to do with the material of the brake pads.
In general, choosing a reliable brake pad brand can reduce the occurrence of such problems.
Brake pad direction Angle problem:
Step on the brake lightly when reversing, if it makes a very harsh sound, it may be because the brake pads form the direction Angle of friction.
In this case, you can step on the brakes a few more feet when reversing, which can usually solve the problem without maintenance.
Brake caliper problem:
Brake caliper movable pin wear or spring. Problems such as sheet falling off may also cause abnormal brake sound.
Brake calipers need to be inspected and damaged parts replaced.
New brake pad running-in:
If it is a newly installed brake pad, there may be a certain abnormal sound in the running-in stage, which is a normal phenomenon.
When the run-in is complete, the abnormal sound usually disappears. If the abnormal sound persists, it needs to be checked and treated.
Brake pad loading position offset:
If the brake pad loading position is offset or out of the positioning slot, the vehicle may appear friction sound when driving.
The problem can be solved by disassembling, resetting and tightening the brake pads.
In order to reduce the risk of brake pads making sharp noise, it is recommended that the owner regularly check the wear of the brake system, replace the brake pads with serious wear in time, and keep the brake system clean and dry. If the abnormal sound persists or worsens, you should promptly go to the auto repair shop or service center for more in-depth inspection and maintenance.
Post time: Dec-18-2024