What Causes Brake Caliper Sticking When Hot and How to Fix It

When it comes to determining car quality and dependability on the market, safety is one of the most important factors to consider. When we think about safety, we usually think of brakes since they are the component that allows your car to stop. The speed and smoothness with which the car stops when you push the brake pedal distinguishes excellent brakes from bad brakes.

Some braking issues may occur if the brake calliper sticks when hot. This might cause significant damage to the vehicle and put the occupants in danger. In this post, we'll look at the reasons of a stuck brake calliper, the symptoms it produces, and how to remedy it so your braking power returns to normal.

If you do come across any of the mentioned symptoms, we recommend that that you search online for car repairs near me garage and book your car in with a professional car mechanic to have the issue repaired.

What Can Make a Brake Caliper Stick?

To begin, what does a brake calliper stick imply? The brake oil is squeezed through hoses into the brake calliper, which retains a brake pad, when you apply brakes and press on the brake pedal. As a result, when pressurised fluid enters the brake calliper, the calliper piston is forced into the brake pad, causing it to contact the brake disc. The car comes to a halt due to the strong friction between the brake pad and the disc. When the brakes are in excellent working order, this only happens in regular operation.

A stuck brake calliper implies that the brake pad always touches the brake disc, even when the brakes are not applied. What causes this to happen? This might be due to a variety of factors. Let us not go into the root reasons of this problem:

Brake Caliper Piston -

At the end of the calliper piston is a rubber boot that keeps it greased and keeps dirt and dust out. The dust boot might be damaged if you install a replacement brake pad recklessly or by an unskilled technician. This causes dust to adhere to the calliper piston, keeping it open. As a result, the brake and calliper piston will not return to its original position, instead sticking on the braking pad.

Brake Hose -

The brake hose that carries oil to the brake callipers wears down and dries up with time, resulting in cracks. The brake fluid flows into the pistons, causing the calliper to jam. Brake hose failure might cause a brand new brake calliper to stick after installation.

Brake Caliper Slides -

One of the most prevalent causes of brake calliper jamming is brake calliper slides. When the brake line rusts, the calliper slips. When the brake pedal is pushed, the brake pad slips into slots in each calliper. When the brake pedal is removed, the brake pad returns to its original position in these grooves. When rust or debris build up in the grooves or on the brake pads, defects occur. Due to the blocked route back, the brake pad does not move back out of the grooves when you take your foot off the brake pedal.

Brake Caliper Bolts -

Stuck bolts are another factor that makes the brake calliper sticky. When braking and releasing the brakes, these bolts are designed to move freely. The bolts are protected from rust and dust by rubber shields. What happens when these rubber boots are no longer functional? Rust and dust clog the bolts, making them difficult to move with calliper motions and making the calliper sticky.

It is recommended to have regular check ups of your car by looking for reputable car garages near me.

What Are the Signs That Your Caliper Is Sticking?

Every flaw has signs and symptoms that might help you recognise it. The following signs indicate that the brake calliper is sticking:

Car Pull to One Side -

One of the most noticeable stuck brake calliper symptoms is vehicle pulling to one side. When one set of brakes is stuck and the other isn't, the car will always pull to the side with the jammed brakes. It's easy to mistake it for mismatched wheels, but you'll notice the difference. Search for repair garage near me online and let a trained technician fix the issue.

The Car Slows Down on Its Own -

Because the brake pads are constantly in contact with the discs while the brakes are sticky. This means that the car is always braking even if the brake pedal is not pressed. As a result of the automated braking, the car will slow down on its own. This causes the brake pad and disc to wear down faster, and you may hear brake calliper sticking noises as a result.

High Fuel Consumption -

One probable reason of high fuel consumption is jammed brakes. Because the car will be braking often, the engine will have to work harder to keep up with the vehicle's pace. Fuel usage rises as a result of this.

Excessive Heat from the Wheels -

When you brake, the brake pad comes into contact with the disc. The friction created by this contact causes the car to slow down. Imagine what occurs when the brake calliper is glued to the disc if this procedure creates heat. When the brake calliper adheres to the disc, it generates a lot of heat, which you can feel on the wheels. After a drive, avoid touching the wheels since they will be extremely hot and may burn your hands.

What Should You Do If Your Brake Caliper Is Sticking?

A stuck calliper, as we've seen, meaning the calliper is locked up after braking and the piston never returns to its previous position. As a result, the disc and brake pad are always in contact. To avoid any risk, it is recommended that you repair your car before continuing to drive. Here's how to replace a jammed brake calliper and get your car back on the road.

To begin, use a floor jack to raise the car and place it on the jack stands. To disassemble the wheels, spin the wheel nuts clockwise and remove them by hand using a wrench and the appropriate nut.

The brake calliper will next be fitted over the brake disc and lay inside the brake pad. Clean the brake unit using a brake cleaning spray.

Using a wrench and the appropriate socket nut, remove the brake calliper. Pull the calliper up, taking care not to harm the brake lines in the process. The brake pads may be found within the brake calliper and removed by hand.

Spray the brake cleaner into the caliper's interior parts to remove any debris, build-ups, or dust that has accumulated as a result of the braking operation. After that, clear out and remove any residues with a towel.

Lubricate the calliper side pins with white lithium oil. Grease the caliper's bolts to make the caliper's motions smooth and simple. Place the brake pad in its proper location and adjust the brake calliper as needed. Finally, using a socket wrench, tighten the calliper bolts.

Use the identical methods in the back wheels of the car if the rear brake calliper is jammed.

After you've completed the instructions, test the car to check whether the problem has been resolved. If not, seek expert assistance or have your callipers changed at the nearest car repair and service garage.

Frequently Asked Questions (FAQ’s)

Is Driving with a Sticking Caliper Safe?

The brake pad does not return to its normal position after pressing the brake pedal if you have a stuck calliper. This implies that your car will constantly be braking and will continue to do so. As a result, the brake pads, discs, and transmission system are overworked, resulting in failure. As a result, driving a car with a stuck calliper is not a smart idea.

Is it possible for an ABS brake to cause a calliper to stick?

Yes, the ABS sends out brake pulses. As a result, if the brake calliper is defective, it will cling to the disc and fail to release.

Can I use WD40 to lubricate my brake callipers?

No, to avoid slipping, you should only use specific brake cleaning spray or brake grease on the braking components. 


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