Causes and solutions for inconsistent wear on both sides of the brake pads
The brake pads have a replacement cycle. Under normal circumstances, the wear on both sides is about the same, so they need to be replaced at the same time. If the brake pads on both sides are very different, one side is grounded to the limit, and the other side is very What is the reason for the thick? What should I do if I encounter this situation? Today, the editor will talk about the reasons and solutions for the inconsistency of the brake pads on both sides. I hope to help everyone.
Reasons for inconsistent wear on both sides of the brake pads
The brake pad wear thickness is inconsistent. Most of the owners do not know it. The maintenance technician said that the brake pad should be replaced. The owner agreed to replace it. After the change, he drove away. Responsible service technicians will find out the cause and repair, and the technicians with weak sense of responsibility or inexperienced will be replaced by new films, especially some interns, who do not know that they are not normal. Therefore, it is recommended here that the owner of the car, after replacing the brake pads, look at it yourself. First, see if the thickness is really changed. The second is to see if the wear on both sides is consistent to determine if there is any problem with the brake system. In addition, when checking the thickness of the brake pad, both sides should be inspected, and the inner and outer pieces on the same side are also checked.
The most inconsistent wear on both sides is caused by the stuck pin of the sub-pump. When the brake is applied, the brake sub-pump is moved along the guide pin. If the guide pin lacks grease and the movement is not smooth, there will be a bad return of the pump. When we step on the brakes, the brake oil pressure is high, pushing the piston out, the sub-pump can move normally, and the brakes are normal. But when the brakes are released, there is no force to push the piston back, but the brake pads do not exert any force, and there is no brake. If the sub-pump does not move smoothly, even if the brake is released, the braking force may not be released for a short time, and it will last for a few seconds, but the braking force is weak and the driving is not felt. This is a long time, the brakes are more frequent, and the brake pads on this side will wear more.
Solution to inconsistent wear on both sides of the brake pad
This is the case when changing the brake pads. It can be solved by simply lubricating the guide pins. Clean up all the grease and dirt on the top and reapply the new grease to completely solve it. This step can be done by changing the brake pads. In fact, it should be done by the repairman. Some new brake pads automatically have a package of grease. In addition to the pinning of the guide pin, there is also a case where the piston of the sub-pump is stuck. The principle is the same as that of the guide pin, and it is not easy to go back after coming out. It has been strongly applied to the brake pads, resulting in serious wear of the brake pads. I have encountered the situation that the sub-pump is completely stuck before, and the brakes are not coming out. This requires replacing the sub-pump.
If it is not completely stuck, it is not necessary to replace it first, it may not be bad, and it may be caused by lack of lubrication. You can use the tool to push the piston inside, then step on the brake to step it out, then push it forward and repeat it three or four times. The purpose of this is to let the brake oil lubricate the entire pumping channel, and the piston is also active. a bit. When it feels good to push and step out, it means that the sub-pump has returned to normal. If it is still not smooth, it needs to be replaced.
If your brake pads are severely inconsistent on both sides, you will need to check and repair immediately.
The above is about the reasons for the inconsistent wear on both sides of the brake pads and the solution. I hope that everyone can understand the causes and solutions of the inconsistent wear on both sides of the brake pads.