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How do we do when the brake is given an abnormal sound?
- Aug 25, 2017 -


Brake pads in the process of moving will be abnormal sound, a serious time will affect the driving safety. We have to solve that problems,we must first find the cause of this situation, then the reasons for the following:

First,The main factors are caused by human factors and product factors.

A: Human factors.

1. Remove the original car film after the new film.

At present, according to the actual situation, the original car brakes scratch the original car brake discs in the probability of more than 50%, but as a result of the original car parts, and secondly because the scratches did not sound, so 90% of the repair shop and The driver does not believe that the original car film injury plate, so the replacement of new films often do not take the initiative to check whether the brake disc scratches, until the new film when the re-check, only to find scratches on the brake disc, which often leads to the driver Requires a new film repair shop, dealer, manufacturer compensation brake disc. This is clearly caused by human factors. Treatment: replacement brake pads must first check the brake disc with or without scratches, if scratches can be recommended to scratch or replace the new plate. If the driver does not agree, it should be marked on the repair order, signed by the driver, which will avoid the subsequent sound or injury caused by the driver claims.

Second, the injury plate.

Here refers to the disc is the surface of the brake disc smooth smooth case, in addition to driving the brake pads caught foreign body, is due to uneven production process caused by uneven mixing. In fact, the current brake discs due to cost reasons, the hardness has been worse than before, even if the original car brake disc is generally not as good as before, which led to semi-metallic brake pads are particularly vulnerable to injury, as long as a slight scratch, 1.5 mm, there is no need to change the disk, as long as the plate can continue to use flat.

Third, the friction block dregs or fall off.

1. If the friction block color does not change and dregs is a product quality problems. Should replace the new film.

2. Friction block discoloration after dregs or fall off, the reasons can be divided into the following:

A, the caliper does not return, the brake caliper does not return long, will cause the brake pad temperature is too high, resulting in friction material ablation, or adhesive failure, in this case, the friction material into red or yellow , This is not a product quality reasons, but to replace the new film and maintenance brake caliper.

B, prolonged brakes lead to dregs or fall off. This situation is more in the mountains more, the second is more in the highway. In the mountains due to steep road length. Experienced drivers use point brake downhill, but the novice is often a long time continuous braking, it is easy to cause the film ablated dregs off the block, this dregs off the color will turn into red or yellow, then the highway driving, because the road is good car, the driver is often more than the speed of 110 km / hour speed, and sometimes even more than 200 km. In case of an emergency, the brake is often lost, must be continuous braking. This long time the brake will often cause the film to ablate the slag. The film color will change to red or yellow.

C, in the above A, B binomial dregs appear in the slag,that does not belong to product liability, manufacturers do not assume responsibility.

Four, brake failure.

A: just put on the new film that brake failure, which is often due to the installation of the film surface was artificially get oil and other grease caused by this, which is not part of the product liability, after removal can be detected with or without traces of the manufacturers will not Responsible, the driver can only change the new film.

B: Brakes fail after a while. Most of this situation occurs when the road water, just in the puddle when the brakes, high temperature film and the case of cold water will be quenched in the film surface of the plate to form a hard oxide layer, the surface is hard and the material from the normal White turns blue or blue-red. This situation must also replace the brake pads with the brake disc. But that does not belong to product quality responsibility.