How to maintain and replace the brake pads
Most cars adopt the front disc and rear drum brake structure. Generally, the front brake shoe is worn relatively quickly and the rear brake shoe is used for a relatively long time. The following aspects should be paid attention to in daily inspection and maintenance:
Under normal driving conditions, check the brake shoes every 5000 km, not only check the remaining thickness, but also check the wear state of the shoes, whether the wear degree on both sides is the same, whether they can return freely, etc. if abnormal conditions are found, they must be handled immediately.
The brake shoe is generally composed of iron lining plate and friction material. Do not replace the shoe until the friction material is worn out. For example, the thickness of the front brake shoe of Jetta is 14mm, while the replacement limit thickness is 7mm, including more than 3mm iron lining plate thickness and nearly 4mm friction material thickness. Some vehicles are equipped with brake shoe alarm function. Once the wear limit is reached, the instrument will alarm and prompt to replace the shoe. The shoe that has reached the service limit must be replaced. Even if it can be used for a period of time, it will reduce the braking effect and affect the driving safety.
