Why replace brake discs How to replace brake discs?

The main reasons for replacing the brake disc include the fact that the brake disc wear affects the braking effect. The brake disc is a wearing part and needs to be replaced regularly. Failure to replace it in time may lead to serious consequences.

Brake disc wear affects the braking effect: As an important part of the braking system, the brake disc wear will directly affect the braking effect. When the brake disc is severely worn, the friction coefficient between the caliper and the brake disc decreases, resulting in extended braking distance and even a dangerous situation of brake failure.

The brake disc is a wearing part and needs to be replaced regularly: the brake disc will wear due to friction during long-term operation. This is normal loss of consumables. In order to ensure driving safety, severely worn brake discs need to be inspected and replaced regularly.

Failure to replace it in time may lead to serious consequences: If a severely worn brake disc is not replaced in time, it may cause brake failure and cause an accident. Therefore, timely replacement of brake discs is an important measure to ensure driving safety.

In addition, it is generally recommended to replace the brake disc once after replacing the brake pads twice, because the wear of the brake pads is more serious and the replacement time is more frequent, and this mileage is less than half of the mileage of the brake disc. Therefore, when the vehicle's brake pads are replaced twice, the thickness of the brake disc is generally close to or reaches the warning line. At this time, car owners need to carefully check the wear of the vehicle's brake disc and replace it with new accessories in time.

To sum up, in order to ensure driving safety, seriously worn brake discs must be inspected regularly and replaced in time.

How to replace brake disc?

The process of replacing brake rotors involves several key steps, and it's crucial to ensure safety and correctness. Here are the detailed steps for replacing a brake disc:

Preparation:

Find a flat, safe and spacious place to park your car and engage the handbrake to prevent it from sliding.

Use a jack to lift the car, making sure the wheels are off the ground.

Place two fixed-height jacks at the wheels to prevent the jacks from suddenly falling during operation to provide protection.

Place two blocks at the rear wheels to prevent the vehicle from rolling away due to the front being jacked up.

Remove the old brake disc:

Remove the front tire to reveal the round disc, which is the car's brake disc.

Remove the screws holding the brake caliper and remove the brake caliper.

Remove the old brake disc. Since rust may develop between the brake disc and bottom bracket, you can remove the old brake disc by gently tapping it with a hammer.

Install new brake discs:

Clean contact surfaces and sliding seats to ensure there is no dirt or corrosion.

Apply a thin layer of grease to the brake disc's slip-fit ​​seat.

Align the disc eye with the bearing and gently tap the inside of the disc with a hammer to fully seat it on the bearing.

Install the brake caliper and tighten the two setscrews.

Use the rolling bearing to check whether there is any abnormal noise during rotation.

Precautions:

During operation, be sure to pay attention to safety and avoid damaging the brake hose and brake pipeline.

For different types of brake discs (such as composite brake discs, ceramic brake discs), specific safety precautions need to be paid attention to when operating, such as avoiding the use of sharp tools, not applying lateral force, etc.

After replacing the brake disc, it is recommended to start the vehicle and repeatedly press the brake pedal until it reaches a certain strength.

If you do not have enough experience and skills, it is best to go to a professional 4S shop for replacement to ensure safety and accuracy.