Brake pads as a more serious wear parts, after the new brake pads, automotive brake pad manufacturers remind you that you need to pay attention to three points:
First, when changing the brake pads, be sure to pay attention to grinding its corners. Generally, brake pads are reserved for a diagonal plane, commonly known as “chamfer”. In addition to this “chamfer”, it is also necessary to polish the edge position of the entire friction surface, which is actually a noise matching process. Because the old brake pads and brake discs have passed tens of thousands of kilometers of “lingering”, they have formed a certain complementary shape between each other. That is to say, the old brake pads have carved a notch of their own on the brake disc. After the brake pads are changed, there will be a certain friction noise. Because the brake pad and brake disc can not fully fit.
Therefore, by sanding the corners, so that the new brake pads can be fully stuck in the brake disc groove left before, there will be no noise, but also ensure that the brake force is sufficient.
Second, after changing the brake pads, try not to brake with big feet, let alone brake sharply. Because the friction surface of the new brake pads is not fully compatible with the surface of the brake disc.
The size of the fitting area directly determines the effect of the brake. Because the old brake pads have left their own traces on the brake disc, the new brake pads have to be replaced, and they must first adapt to these traces, and slowly the contact area will become larger.
So, why do high-performance models choose large-size brake discs and pads? The more reasonable explanation is that the increase of the contact area is conducive to heat dissipation and reduce the thermal attenuation effect when braking. Moreover, if the brake pad is small, it is easy to be rubbed very thin, if the brake pad is large, it will delay the thinning time.
The so-called thermal attenuation refers to that when braking vigorously, due to the intense friction between the brake pad and the brake disc, the friction material of the brake pad is softened by thermal expansion, and the friction coefficient is reduced, thus affecting the braking performance.
Third, after replacing the new brake pads, we must pay attention to running-in, so that the brake pads and the brake disc as soon as possible to achieve a better fit to ensure the braking effect.
In general, after the new brake pads are replaced, it is necessary to fully run in at least 500km to allow the new brake pads to enter the best working condition. Before this, the speed should be properly controlled, and the road condition should be predicted at the high speed to prevent sudden braking and affect the braking force. In rain and snow weather, we should pay more attention to grasp the brake advance and maintain the distance.
After replacing the new brake pads, a slight abnormal sound during the braking process is a normal phenomenon, if it disappears after running in, then it does not need to be concerned. However, if the abnormal sound is obvious and lasts a long time, you need to go to the quick repair shop to check whether the edge is wearing and producing noise.
In general, replace the brake pads more than 3 times, you need to replace a new brake disc. Of course, in the process of using the car, every time you replace the brake pads, you should check the wear depth of the brake disc. If it reaches 2mm, it should be replaced in time.
When replacing the new brake pads, the master can help check whether the return of the brake pump is good. If for some reason, the brake sub-pump, that is, the return of the hydraulic piston is not normal, it will seriously wear the brake pads and brake discs. There’s gonna be a lot of damage.
Post time: Jan-14-2025