What should I do if the car brakes rust on a rainy or long-term stop?
The material of the brake disc is mostly cast iron, and it is exposed for a long time. The working environment is relatively inferior, and it often encounters the test of two days of ice and fire. If the vehicle is parked for a long time, or when it is in a damp environment, some rust will be generated on the surface of the brake disc. These rusts will affect the normal operation of the brake system. Therefore, it is necessary for us to consciously Clear.
If there is only a slight rust on the surface, we can remove it by continuous braking while driving. Of course, this is safe and does not affect public transportation. While driving, gently press the brakes to allow the friction between the brake pads and the brake disc to “polish” the surface.
If the rust situation is serious, we do not recommend using the above method of braking to remove rust. When there is a lot of rust, the surface of the brake disc will be uneven. In this case, the brake will cause the body to shake, and the driver can obviously feel the abnormality of the brake pedal, the steering wheel and the body. At this time, it will be difficult to remove the rust, even if it is barely "polished", the brake pad will be abnormally worn afterwards, and there will still be jitter.
Therefore, it is best for us to drive the vehicle into the repair shop, remove the brake disc, sand the rust with sandpaper, check the surface of the brake pad for abnormalities, and conduct a road test after installation. Drive on a flat road at a speed of 70KM/H and perform multiple braking to ensure no abnormality. If there is still a jitter condition, it means that the surface of the brake disc is not flat. You need to do further polishing and leveling or replace it as appropriate.
The brake effect of the brake disc is better than the drum brake
Brake disc manufacturing process