What are the front brake pads of a car
The front brake pad is a key component of the automobile brake system, its main function is to slow down or stop the vehicle through friction. The front brake pads are usually installed on the front wheels of the car, which wear out relatively quickly because they take on more steering and braking tasks .
Working principle
The working principle of the front brake pads is to convert the kinetic energy of the vehicle into thermal energy through friction, so as to achieve the purpose of slowing down or stopping. When the driver presses the brake pedal, the brake pad and the brake disc or brake drum produce friction, the kinetic energy of the vehicle is converted into heat energy and emitted, thus achieving the braking effect .
Replacement cycle
The replacement cycle of the front brake pads usually depends on mileage and usage. Under normal circumstances, the wear speed of the front brake pads is faster, and it needs to be replaced once when driving about 30,000 to 50,000 kilometers .
In addition, the owner can also determine whether the brake pad needs to be replaced by observing the thickness of the brake pad. When the thickness of the brake pad is less than 5 mm, it indicates that it is close to the wear limit and needs to be replaced .
Maintenance suggestion
In order to ensure the normal work of the front brake pads, the owner should regularly check the wear of the brake pads. When it is found that the thickness of the brake pad is reduced to one-third of the original thickness, it should be replaced in time.
In addition, the choice of original brake pads can ensure the best braking effect and minimum wear .
After replacing the brake pads, it is recommended to gently step on the brake to eliminate the gap between the brake disc and the shoe to ensure the braking effect .
Car front brake pad failure mainly includes the following common problems and their solutions:
Brake pad wear : When the brake pad is worn to the limit, it will emit a "sizzling" metal friction sound, and the thickness of the brake pad is usually less than 3 mm. The solution is to replace the brake pads in time to ensure safety .
brake disc rust or uneven : rainy day or car wash, the brake disc may rust, starting when the brake will make a rustling sound, this is a normal phenomenon, after a period of road rust wear off, abnormal sound will disappear. However, if the brake disc surface is uneven, it will continue to emit abnormal sound. The solution is to check the thickness and surface condition of the brake disc and replace it if necessary.
hard brake pads : If the new brake pads are hard, they may make a loud noise. Recommended to choose ceramic composite brake pads, low noise and durable .
brake disc stuck foreign body : between the brake disc and the brake pad stuck in small stones or metal chips, will emit a sharp "crunch" sound. The solution is to tap the brake a few times, throw the foreign matter out by friction, check and clean it if necessary .
brake not return : After the brake pedal is pressed, the pedal does not return to the original position or the return is slow, usually the pump piston has stains. The solution is to clean the branch pump piston and remove the air from the brake line .
Soft brakes : There may be insufficient brake oil, thin brake discs or pads, air in the brake lines, or bad brake oil. The solution is to change the brake oil or adjust the brake system .
brake failure : Although uncommon, brake failure can be related to the quality of the car or a faulty brake system. The solution is to control the direction, use the engine brake to slow down gradually, if necessary, use the hand brake to assist the deceleration .
The normal phenomenon of new brake pads in the running-in period : the newly replaced brake pads may emit a slight "squeak" in the running-in period, which is a normal phenomenon, usually after running several hundred kilometers will be better. If the sound continues or increases, it may be the brake pad model does not match, need to check and replace the appropriate brake pad .
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