Detailed analysis on the maintenance of brake pads
Brake shoes, commonly known as brake pads, are consumable items that will gradually wear out during use. When the wear reaches the extreme position, they must be replaced, otherwise the braking effect will be reduced and even cause safety accidents. Brake pads are related to life and safety and must be treated with caution.
1. Under normal driving conditions, check the brake shoe every 5,000 kilometers. Not only should you check the remaining thickness, but also the wear status of the shoe, whether the degree of wear on both sides is the same, whether it returns freely, etc., if any abnormality is found The situation must be dealt with immediately.
2. The brake shoe is generally composed of an iron lining plate and friction material. Do not wait for the friction material to be worn away before replacing the shoe. For example, the front brake pads of the Jetta are 14 mm thick when new, but the limit thickness for replacement is 7 mm, including more than 3 mm of iron lining thickness and nearly 4 mm of friction material thickness. Some vehicles have a brake shoe alarm function. Once the wear limit is reached, the instrument will alarm to prompt you to replace the shoe. Shoes that have reached their service limit must be replaced. Even if they can still be used for a period of time, they will reduce the braking effect and affect driving safety.
3. When replacing, you should replace the brake pads provided by the original spare parts. Only in this way can the braking effect between the brake pads and the brake disc be good and the wear and tear be small.
4. When replacing the shoes, professional tools must be used to push back the brake cylinder. Do not use other crowbars to press back hard, as this may easily cause the brake caliper guide screws to bend and cause the brake pads to become stuck.
5. After replacement, apply the brake several times to eliminate the gap between the shoe and the brake disc, which may cause no braking and may cause accidents.
6. After the brake shoes are replaced, they need to be run-in for 200 kilometers to achieve the best braking effect. The newly replaced shoes must be driven with caution.
The above six points are a summary of brake pad maintenance. I hope it can help everyone.
