Maintenance method of brake pad
Brake shoes, commonly referred to brake pads, belong to easily-consumed products. They will gradually wear out in use. They should be replaced when worn to the limit position. Otherwise, they will reduce the effect of braking and even cause accidents. The brake pad is vital to life and must be treated with caution.
Under normal driving conditions, every 5000 kilometers roads need to check the brake pad. It is neccesary to check not only the remaining thickness, but also the wear status of the pad and check whether the wear degree on both sides is the same, whether the recovery is frequent or not. And if finding the abnormal condition, it is very important to deal with immediately.
The brake pad is usually made up of two parts: the iron liner and the friction material. We cannot replace the pad until the friction material worn away. For example, the front brake pad of Jetta, the thickness of the new pad is 14 mm, and the limited thickness of replacement is 7 mm, which includes more than 3 mm of iron lining thickness and nearly 4 mm thickness of friction material. Some vehicles have brake pad alarm function. Once reaching wear limits, the instrument will alarm to replace the pad. The pad must be replaced when reach the limits, even if they can be used for a period of time, it will reduce the affect of braking and affect the safety of the driving.
When replacing the pad, a special tool must be used to put the brake sub pump back. Do not use a crowbar hard pressed back. If doing like this, it is easy to cause the brake caliper guide screw bending, so that the brake will clamp.
After the replacement, we must hit the brakes many time to eliminate brake pad clearance between pad and brake disc.
When the brake shoe is replaced, it is necessary to drive 200 kilometers to achieve the best braking performance. The newly changed pad must be driven cautiously.