How to check the quality of brake shoes

How to check the quality of brake shoes？

1. Look at the thickness: The thickness of the new brake shoe is generally about 1.5cm. With the continuous friction in use, the thickness will gradually become thinner. Observe the thickness of the brake shoe with the naked eye, only about 1/3 of the original thickness (about 0.5cm) remains. Car owners will increase the frequency of self-checks and be ready to replace them at any time. Due to the design of the wheel hubs, some models do not have the conditions for visual inspection, and the tires need to be removed to complete.

If it is the latter, wait until the warning light is on, the metal base of the brake shoe and the brake disc are already in a state of iron grinding. At this point, you will see bright iron filings near the edge of the rim. Therefore, we recommend regularly checking the wear of the brake shoes to see if they can be used, rather than just trusting the warning lights.

2. Listen to the sound: If there is a "iron friction iron" sound or a harsh sound when braking (it may also be the effect of the brake pads running in at the beginning of the installation), the brake shoes must be installed immediately. replace.

3. Foot feel: If it is very difficult to step on it, it is often necessary to step on the brake deeper to achieve the previous braking effect, or when emergency braking, you will obviously feel that the pedal position is low, then the brake shoe may be basically lost. The friction is gone and must be replaced at this point.

How to choose brake shoes？

Four points of view: First, look at the friction coefficient. The friction coefficient determines the basic braking torque of the brake pads. If it is too high, it will cause wheel locking, loss of direction control and burning pads during the braking process. If it is too low, the braking distance will be too long;

Second, it depends on the safety. The brake pads will generate instantaneous high temperature during braking, especially during high-speed driving or emergency braking, the friction coefficient of the friction pads will decrease under high temperature conditions;

The third is to see whether it is comfortable, including braking feeling, noise, dust, smoke, odor, etc., which is a direct reflection of friction performance;

Fourth, look at the life, usually the brake pads can guarantee a service life of 30,000 kilometers.

Two choices: First, you should choose car brake pads produced by regular manufacturers, with license numbers, specified friction coefficients, and implementation standards.

There should be a certificate of conformity, production batch number, production date, etc. in the box; secondly, choose to go to a professional maintenance point and ask a professional to install it.

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