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The working principle of the brake is mainly from friction. The friction between the brake pad and the brake disc (drum) and the tire and the ground is used to convert the kinetic energy of the vehicle's travel into heat energy after friction and stop the car. A good and efficient braking system must provide stable, sufficient, and controllable braking force, and has good hydraulic transmission and cooling capabilities to ensure that the force exerted by the driver from the brake pedal can be fully and effectively transmitted to the master cylinder. And each sub-pump, and to avoid the hydraulic failure caused by high heat and brake decay.
The replacement of brake pads depends on how long your gasket has been used in your car's life. In general, if you have exercised more than 80,000 kilometers, the brake pads need to be replaced. However, if you hear the sound of wheel friction from you, you should replace the brake pads regardless of your mileage. If you are not sure how many kilometers you have exercised, you may go to a free replacement pad store and buy brake pads or go to a car service shop to install them.
How to buy
First of all, look at the friction coefficient, the friction coefficient determines the basic braking torque of the brake pad. Too high will cause the wheels in the braking process to lock up, lose control of the direction and burn film. Too low braking distance is too long. Safety, the brake pad will produce instantaneous high temperature during braking, especially at high speed or emergency braking. Under high temperature conditions, the friction coefficient of the friction plate will decrease; Thirdly, whether it is comfortable, including brake pad, noise, dust, Smoke, odor, etc., is a direct manifestation of friction performance; four look at life, usually brake pads can guarantee the service life of 30,000 kilometers.
Two choices First, auto brake pads that are manufactured by regular manufacturers, with license numbers, specified friction coefficients, and execution standards, should be selected, and the packaging should have a certificate, a production lot number, a production date, etc.; secondly, it should be selected for professional repairs. Ask a professional to install it.