Brake pads as a popular vulnerable parts, I believe that friends often deal with it, today for you to bring some use case analysis.
1. It is reasonable for the brake pad to have a certain up-down offset wear. As shown in Figure 1, the linear velocity at point 1 is faster than that at point 2 during the braking process, resulting in more wear on the outside side than on the inside side of the brake pad during use.
2. As shown in FIG. 3 and FIG. 4, the noise caused by severe eccentric wear is found to be caused by stagnant guide pin and dry and hard grease of guide pin, resulting in displacement of calipers during work.
Clean the guide pins, grease the upper guide pins and sand the old pieces.
1. A certain degree of partial grinding of the inner and outer pieces is reasonable.When braking, the inner brake pad directly receives the piston pressure and first contacts the brake disc, and the outer brake pad needs to overcome the resistance of the caliper guide rail before pressing the brake disc.Each brake, the piston side (inside) of the brake pad contact disc priority, and the inner brake pad subjected to greater pressure than the outside, resulting in a certain degree of internal and external disc wear.
2. The severe offset wear is caused by the rust of the guide pin or the dry and hard grease of the guide pin that causes the calipers to move and stick.