Brake disc wear replacement standard
2020-06-27 source: Laizhou Yiante Auto Parts Co., Ltd
With the development of automobile industry, automobiles have entered thousands of households. The brake performance of the car is the most concerned problem. When the brake develops from drum type to disc type, it fully shows the advantages of disc brake - strong performance, fast heat dissipation. At present, most cars use butterfly brake. So, how often do we need to replace the brake discs in use?
It is said that the front wheel of the brake disc is about 5W km, and the rear wheel is about 10W. In fact, I think there is no standard. The replacement of brake disc has a lot to do with driving habits and driving conditions. If driving in urban areas or mountainous areas, the braking frequency is large, so the wear is fast, the replacement time or kilometer will be shortened, and the driving speed or less braking will be prolonged.
How do you really judge that the brake disc needs to be replaced?
First of all, visually check whether there is a deep groove (more than 1.5mm) on the surface of the brake disc. It is estimated that the brake disc needs to be replaced.
It is mainly due to the debris and other foreign matters in the middle of the brake disc and the brake pad, and the friction between the metal layer and the brake disc when the brake pad is worn to the limit.
Secondly, the brake disc has wear limit mark (most of them have several grooves). When the wear mark disappears, the brake disc should be replaced.
Third, when braking, there is a sharp noise, and the braking effect is poor, and the brake pad can not be improved after changing. At this time, it should be the brake disc that makes a noise due to the deformation of the brake disc after a long time of braking or frequent high temperature braking on a long slope, the surface burning stubborn and the hardness increasing.
At this time, the method of honing can be adopted, but the honing on both sides cannot exceed 3mm, otherwise the brake disc shall be replaced.
Fourth, when braking, if there is tire runout at the scene, check whether the brake disc is deformed, if so, it must be replaced.
Fifthly, the car is often washed as soon as the car stops. The brake disc is damaged due to the sudden cold water in case of high temperature, deformation due to thermal expansion and contraction.
Sixthly, the instrument panel of some models shows the indicator light of brake pad and brake disc replacement.
In general, it is necessary to check the brake disc when replacing the brake pad. Braking is about everyone's safety. Don't be careless. Some people change the brake disc after tens of thousands of kilometers, some people report that the brake disc is not replaced even when the car is scrapped. The key is that the brake disc is worn due to various factors. Don't listen to some shops' saying that it's so mysterious. As long as you grasp the above, the brake is worry free.
