Is it necessary to change the brake disc abnormal noise?
Abnormal brake sound and disc change, but the reason has nothing to do with the disc
Everyone knows that there will be some abnormal noises after the brakes are used for a long time, and the brother Tai is no exception. Not long after his Cruze came out of the insurance policy, he felt that the brake discs hissed when braking at low speed, and the direction was slightly jittery, so he checked with the nearby roadside store. As a result, the routine came….
The brake disc is worn out but the disc is replaced
Brother Tai asked for some photos of the old brother when he replaced the parts. From the wear degree of the old brake discs and brake pads that were removed, it can be seen that the wear degree of the outer ring of the original brake disc is much more serious than that of the inner side, and from the brake pads It can be seen that the brake pads have a certain degree of partial wear.
The real reason for the abnormal brake noise is the guide pin
In fact, the old fans of Brother Tai must have read the two articles about brake maintenance that Brother Tai wrote before. The main reason for the eccentric wear of the brake pads is that the guide pins in the brake cylinder that control the sliding of the brake pads are lack of oil and stuck. Caused. When the guide pin is short of oil, one-sided sliding of the sub-cylinder will occur. If this happens, the guide pin will be eccentrically worn, rusted, or even broken in severe cases, and the brake function will be lost.
Most of the brake disc wear can be “surgically” repaired
The surface of the new brake disc is flat, and the overall hardness of the brake disc is uniform, while the brake pad is different. There are certain hard metal and carbon particles inside, which are evenly distributed under normal circumstances. Therefore, the surface of the brake disc will not be It is as smooth as the new one, with some fine streaks, but it is not very obvious. This is normal.
Post time: Nov-26-2021