Seven Reasons for Brake Pad Abnormal Sound

(One) The noise caused by human factors after the replacement of the brake pads of the original car. Therefore, try to go to a professional brake pad factory to replace the same type of brake pads. For example, Audi cars need to replace the AUDI Brake Pad.

1. It may be that the repairman has biased the brake pads. When removed, you can see that the brake pad surface has only partial friction marks. At this point you will get the 4S shop removed and reinstalled.

2. It suddenly sounds after driving for a period of time. Most of it happens that hard objects on the road, such as gravel and iron scraps, are caught on the brake pads when you step on the brakes. In this case, you can go to the 4S shop for cleaning.

3. Due to the problems of the manufacturers, the size of the friction pads of a type of brake pads is inconsistent, especially the width of the friction pads. The dimensional deviation between some manufacturers can reach three millimeters. This causes the surface of the brake disc to look smooth, but large-sized brake pads will also sound if they are mounted on brake discs that have been rubbed by small-sized brake pads. In this case, you need the CD first, if you can drive for a while without the CD, it will not sound after the traces match.

AUDI Brake Pad

(Two) the sound caused by product factors such as brake pads

If the material of the brake pads is hard and poor, such as prohibiting the use of asbestos-containing brake pads, but some small manufacturers are still producing and selling asbestos-containing brake pads. Although the semi-metallic asbestos-free brake pads have a long driving mileage, which is good for environmental protection and personal health, but the material is hard and the asbestos brake pads are soft, and often they will not sound even if there are scratches on the brake disc. Is the sound of this situation you can only replace the new film.

(Three) abnormal noise of brake pads caused by injured discs

The injured disc here refers to the injured disc when the surface of the brake disc is smooth and flat. In addition to the foreign matter being caught by the brake pads during driving, it is also caused by uneven stirring during the manufacturer's production process. Now because of the cost reasons, the hardness of the brake discs is not as good as before, which causes the semi-metal brake pads to be particularly easy to damage the discs and produce abnormal noise.

(Four) abnormal noise of brake pads caused by slag dropping or falling off of friction blocks

1. Prolonged braking can easily cause slag dropping or falling off. This situation occurs mainly in mountain areas and highways. Due to the steep slopes in the mountains. Experienced drivers will use point brakes for downhill, but novices will often apply continuous brakes for a long time, which will easily cause the film to ablate, slag, and block, or the driver will often exceed the safe speed when driving on the highway. In an emergency situation, the point brake is often ineffective and must be continuously braked. Such long-term braking often causes the plates to ablate, slag, and block, resulting in abnormal noise of the brake pads.

2. The brake caliper does not return for a long time, which will cause the temperature of the brake pads to be too high, causing the friction material to ablate and deteriorate, or the failure of the adhesive to cause abnormal noise.

(Five) The brake cylinder is rusted

If the brake fluid is not changed for a long time, the oil quality will deteriorate, and the water in the oil will react with the sub-pump (cast iron) to rust. This will cause friction noise.

(Six) Pulling by hand is not live

If one of the two killer cables is inactive, the brake pads will be different. At this time, you can adjust or replace the killer cables.

(Seven) Slow return of brake master cylinder

The brake master cylinder returns slowly, and the abnormality of the brake cylinder can also cause abnormal noise of the brake pads.

There are so many reasons for abnormal noises of the brake pads, then how to deal with the abnormal sounds of the brake pads. First of all, we must analyze which kind of abnormal sounds belong to and then deal with them in a targeted manner. The above are the seven reasons why the abnormal noise of brake pads introduced by Chevrolet Brake Pad Manufacturer.