What is the treatment method for the brake disc rust

Update:11-01-2019
Summary:

The brake disc is rusty: Many people don't understand w […]

The brake disc is rusty:
Many people don't understand why the brake discs are rusty and they are worried that the brake performance will drop. In fact, most brake discs in family cars are made of cast iron. They are not rusted on the body surface and exposed to sunlight and rain for extended periods of time. The working environment is very bad. Especially when parking for a long time, the surface is easy to produce. rust. In this case, we can also see the new car storage in the 4S store. These are new cars, but this can happen if you park outdoors for a long time.
The rust of a normal brake disc is actually a normal phenomenon and is not necessarily related to quality. However, it still has some effect on the brake system, but it is not necessarily a big move. The owners of these issues can handle it themselves.
If it is only slightly rusting, we can use the continuous braking method to remove the rust when driving, because the disc brake is braked by the friction between the brake caliper and the brake pad, and can be ground under multiple brakes. Rusty. Of course, go to the security section to do this. This is a slightly rusting "polishing" method.
If the rust is severe, the above method does not apply. It also produces significant jitter when braking, such as the brake pedal and steering wheel. This situation must be treated in particular because rust is too stubborn and not just polished. “No, it will hardly accelerate the wear of the brake pads. In this case, we need to find a repair shop to remove the brake discs and clean the rust.
Of course, if the rust is too serious, even the repair shop will be powerless, so the owner is often in a state where the brake disc must be maintained every two months. In order to avoid serious corrosion of the brake disc, you can also drive on the road at any time.
Does the brake disc rust, what problems should the car brake system pay attention to?
In addition to the rust-like conditions that we can easily see, we also pay attention to two aspects of the brake system inspection. The first is the thickness of the brake pads. The minimum thickness of the brake pad is approximately 2 or 3 mm. Under this restriction, it must be replaced. At present, when the brake pads are too thin, many models will prompt the position of the brake warning lights to facilitate relative self-test. There is no need to worry about a vehicle without a brake alarm because the brake caliper will have a protruding position near the thinnest thickness, generating brake noise to warn the driver.
If it is a drum brake, you can hear the sound of the brake accompanied by the "iron iron" sound, or check that the position of the hand brake becomes high, then the brake pad must be replaced immediately.
Another important consideration for brake system inspection is brake fluid. High quality brake fluid is critical to safety and braking system performance. In order to change the brake fluid regularly, all brake fluid removed from the system should be discarded and cannot be reused. You should buy better quality brake fluids on the market. If the brake fluid gets dirty, release and flush the entire system and fill the master cylinder with new liquid. If you always use brake fluid for a long time and you always add it, then obviously your brake system has a problem and you should check it.