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Brake Caliper Piston Kit

TaiZhou NiuWeiSheng Machinery Co.,Ltd.: Your Leading Brake Caliper Piston Kit Supplier

TaiZhou NiuWeiSheng Machinery Co.,Ltd.(N.W.S.), we are fully committed to providing OEM level replacement parts and repair kits in Steering rack and brake caliper re-manufacturing field.

N.W.S. is a quality-driven company. With years' operation experience, we grow rapidly and successfully win customers' trust and satisfaction in European market.

We believe that, in the near future, N.W.S. Will grow into one of major Chinese re-manufacturing components suppliers.

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Professional Team

N.W.S. is a quality-driven company. With years' operation experience, we grow rapidly and successfully win customers' trust and satisfaction in European market.

High Quality

TaiZhou NiuWeiSheng Machinery Co.,Ltd.(N.W.S.), We believe that, in near future, N.W.S. Will grow into one of major Chinese re-manufacturing components provider.

Accept Odm/Oem Service

TaiZhou NiuWeiSheng Machinery Co.,Ltd.(N.W.S.) commit ourselves to provide OEM level replacement parts and repair kit for Steering rack and brake caliper re-manufacturing field.

What Are Brake Caliper Piston Kits

Brake pistons in the calipers ensure that the pads contact the discs to slow down the vehicle. When you apply pressure to the brake pedal, fluid comes out of the master cylinder and travels down the hoses and lines. It gets to the brake calipers, forcing the pistons to push the pads into the discs.

How Do Brake Caliper Piston Kits Work

The pistons in brake calipers are responsible for the brake pads making contact with the brake discs and consequently slowing the car, so they're a vital component of the braking system.

When you put your foot on the brake pedal, brake fluid is forced from the master cylinder, down the brake pipes and into the brake caliper, where it pushes the pistons out behind the brake pads. This forces the pads to make contact with the discs.

When you take your foot off the brake pedal the pistons - and therefore the pads - retract, thanks to a drop in brake fluid pressure and the piston seals, which return to their uncompressed state.

Pistons are found in both floating and fixed brake calipers. There's usually one or two large diameter pistons in a floating caliper, on the inboard side of the brake rotor. When activated, the piston(s) draw both pads toward the brake disc.

On fixed calipers, there are small-diameter pistons on both sides of the rotor, providing more braking force. Typically you'll find four or six pistons per caliper. This is the type most commonly found in modern cars.

Factors That Affect the Lifespan of Brake Caliper Piston Kits

Several factors can influence how long brake caliper piston kits last. Some of these factors include:

● Driving Habits: The way you drive directly affects the lifespan of your braking system components, including the calipers. Frequent hard braking, aggressive driving, or driving in heavy traffic can cause the calipers to wear out faster.

● Type Of Brake Pads Used: The type of brake pads you use can also impact the longevity of your brake caliper piston kits. Low-quality or incompatible brake pads can cause uneven wear on the caliper and rotor, leading to premature caliper failure.

● Weather Conditions: Extreme weather conditions, such as high heat or cold temperatures, can affect the durability of brake caliper piston kits. For example, road salt used during winter months can cause corrosion in the caliper's metal components, reducing their lifespan.

● Quality Of Manufacturing: The quality of the brake caliper piston kits themselves plays a crucial role in determining their lifespan. High-quality calipers made from durable materials and with proper engineering are more likely to last longer than cheaper, lower-quality options.

Why Do Brake Caliper Piston Kits Fail

Brake brake caliper piston kits are typically tough and durable. They can handle immense fluid pressure from the master cylinder and the heat from braking. They're also regularly exposed to elements like dirt, water, and debris. Brake brake caliper piston kits can last for years.

Calipers and brake caliper piston kits can corrode since they're made of metal. The brake caliper piston kits won't extend or retract smoothly in the caliper if they're rusted. Rust buildup can be more prevalent in areas where salt is present.

Brake caliper piston kits can get stuck in a retracted position and be unable to engage the brake pad onto the brake rotor. Conversely, the piston can also get stuck against the rotor and wear down the brake pad or damage the rotor. If the brake caliper piston kits get stuck, they typically need to be replaced.

Some pistons are also made from a material called phenolic resin. These types of brake caliper piston kits can crack because of age or if they're depressed back into the calipers improperly.

What Are Signs of a Bad Brake Caliper Piston Kit

When brake caliper piston kits go bad, it is crucial to address the issue right away. When brake problems are allowed to persist for too long, not only is safety compromised, but small, relatively inexpensive fixes can become major problems that are more costly to correct.
If you notice any of the following warning signs of a bad brake caliper piston kit, have your brake system inspected as soon as possible.

Leaking brake fluid

Hydraulic pressure is an essential component of the way brake caliper piston kits function, thus any weak spots in the system can leak brake fluid. If you notice a wet, oily spot on the ground near a tire, it could be an indication of a leaky caliper.

Uneven brake pad wear

Brake pads often wear unevenly when calipers go bad. If the brake pads on your vehicle have worn thinner on one side than the other, it could very likely be the result of a faulty caliper.

Squealing or metallic rubbing noise

When brake caliper piston kits stick or freeze up, you may hear noises emanating from the area of the damaged part. Although squealing noises caused by worn brake pads occur when the brake pedal is pressed, caliper-related squealing is most likely to be noticed when you are not using the brakes. If this problem is ignored for too long, the brakes could lock up completely and prevent the wheel from turning.

Vehicle pulls to one side

Within a brake caliper piston kit, one or more pistons move in and out in response to hydraulic pressure from the master cylinder when the brake pedal is pressed. If the piston(s) in one of the front wheel brake caliper piston kits freeze up due to corrosion, debris, or dirt, the brake pads may either fail to make contact with the brake rotor or fail to release the rotor when the brakes are disengaged. When brake pads fail to contact the rotor, the vehicle will pull away from the damaged side when you press the brake pedal. When brake pads fail to release the rotor, the vehicle will pull toward the damaged side when the brake pedal is pressed (and sometimes when it is not).

Clunking noise

In some cases, a caliper bracket that holds the caliper in place may break and create a loud clunking noise. The vehicle should not be driven if this occurs.

Steps To Rebuild Brake Caliper Piston Kits

Step 1: Remove Brake Pads & Secure Brake Caliper Piston Kit
Remove your Brake pads from the vehicle. You'll want to keep one bolt holding the caliper clamshell in place, so you're not dangling it by the brake hose. You could also remove it and secure it with zip ties or a coat hanger.

Step 2: Remove The Caliper Piston
You usually see the videos where the mechanics use compressed air. Let me tell you that compressed air is not going to release rusted-in caliper pistons. You don't even need fancy hydraulic rigs with 10,000 PSI of pressure.
What you need is the tool already provided on your car: the brakes. Yes, you're using the brakes to fix the brakes.
For single-piston calipers, the task is simple. Make sure that all of your other brakes have not been removed and are in their installed position. Also, ensure that the caliper you're working on doesn't have leaks and that the bleeder screw is fully closed.
Pump your brake pedal slowly a few times, and hop out of your car to check on the caliper. By repeating this process, you will be able to see the piston peeking out of the caliper. As long as you are going slowly enough, you should not worry about the piston shooting out like a mortar shell. Also, keep an eye on the brake fluid level, making sure you can at least see fluid in the reservoir. Remember that this will all drain out once you finish the job.
For badly stuck pistons, you may need to stomp on the brakes with more force than you expect. If your pedal suddenly falls to the floor, that indicates you have released the piston.
Note: For calipers with opposing pistons, you will need to use the C-clamp as well as a small piece of wood to counter-hold the opposing piston. You can only remove one piston at a time.

Step 3: Clean Piston And Caliper Bore Thoroughly
Take some sandpaper and smooth down the rusted edges of the caliper bore. I found that the rust accumulated around the seat of the boot. You'll want to use relatively fine sandpaper, no more than 400 grit. You can also use a wire wheel on to do the same job. Make sure you also clean out any channels and seats for seals.

Step 4: Clean The Brake Caliper
Now that you have smoothed the bore of any rust, clean it well with the brake cleaner so that there aren't any remnants of sandpaper or metal that may work its way between the seal and the bore.

Step 5: Install New Pistons
Before installing the piston, make sure you have the right parts. If you can, use a pair of calipers and measure the bore to ensure they match. Otherwise, you can just place them side-by-side and eyeball it.
Using your brake caliper grease, grease up all the rubber components. Gently, but evenly, press the pistons into the bore, also seating the dust seals. If the dust seals are not seated in their groove, you may not be able to press in the piston. This entirely depends on the design of your calipers. Other types of dust seals held in by C-clips make it infinitely easier to install and remove. Be careful not to pinch any of the seals and use liberal amounts of grease.
If your dust seal is held in by a c-clip, just pop it back on, and you're in business.
Compress the piston into its bore fully, and prepare the caliper for installation. You should not need more than the force of your fingers to press the piston in.

Step 6: Finish Installation
Once you've wrapped up the installation of new pistons, reinstall the brake pads, and calipers, making sure to apply caliper grease in all needed areas.
Bleed the brake system to remove any air bubbles, and put your wheels back on. If you've followed these instructions carefully, you'll now be happy to know that your brakes will last you a number of years. For preventative maintenance, bleed your brake fluid every year. Sit back, relax, and happy braking.

Product Equipment

FAQ

Q: What is a brake caliper piston kit?

A: Brake calipers are an essential component of your overall brake system, and the piston is the key component of the brake caliper. Pistons are responsible for forcing the brake pads to make contact with the brake rotor to bring your vehicle to a stop.

Q: How to lubricate a brake caliper piston kit?

A: If desired, apply a thin layer of lubricant to the backside of the pad, where it comes into contact with the caliper piston. Be very careful to not apply lube to the friction side of the pad. That is where the stopping power comes from, and lubricant would cause your brakes to simply stop working.

Q: How do you know if your brake caliper piston kit is seized?

A: In most cases, a seized brake caliper manifests itself as reduced braking power. Usually, when a brake caliper seizes, the brake pad on the side of the caliper piston will wear excessively. Eventually, the brake pad will wear down so much that it can affect the brake disc which will get damaged.

Q: Do I need to replace the brake caliper piston kit?

A: If the rubber boot tears, then rust and other debris slowly build up inside of the piston. In this case, the brake caliper may stick. If this is the problem, it's likely that the whole brake caliper assembly needs replacement.

Q: How long do brake caliper piston kits last?

A: The lifespan of brake caliper piston kits can vary depending on several factors, but on average, they last around 75,000 to 100,000 miles. However, it is essential to regularly inspect and maintain your braking system components, as some calipers may need replacement sooner than this range.

Q: What does a bad brake caliper piston kitsound like?

A: A seized brake caliper piston kit will release a similar squealing noise to worn-out brake pads. This sound will start as a rubbing sound and, if neglected, will escalate to a metallic grinding, scraping, or rubbing sound. This sound indicates metal-on-metal contact within your brake system.

Q: What causes brake caliper piston kits to break?

A: Damage to brake caliper piston kits and pistons comes from road debris, drying or cracking from weather, or deterioration due to age. When a caliper seal fails, it can leak brake fluid, and the brakes will lose hydraulic pressure.

Q: Is it better to rebuild or replace brake caliper piston kits?

A: If the piston is scored or pitted beyond repair, your customers will have to replace the caliper. While caliper rebuild kits are an affordable solution that may prolong the life of the braking system, these kits can only repair limited issues that may affect a caliper over its lifetime.

Q: How to free up a brake caliper piston kit?

A: To remove a caliper piston that has become seized, the hydraulic pressure of the brake system itself can be used. Remove the caliper from the disc, and pump the brake pedal to move the piston past the corroded portion. Now you should be able to disassemble and rebuild it.

Q: How do brake caliper piston kits work?

A: The pistons in brake calipers are responsible for the brake pads making contact with the brake discs and consequently slowing the car, so they're a vital component of the braking system.
When you put your foot on the brake pedal, brake fluid is forced from the master cylinder, down the brake pipes and into the brake caliper, where it pushes the pistons out behind the brake pads. This forces the pads to make contact with the discs.
When you take your foot off the brake pedal the pistons - and therefore the pads - retract, thanks to a drop in brake fluid pressure and the piston seals, which return to their uncompressed state.
Pistons are found in both floating and fixed brake calipers. There's usually one or two large diameter pistons in a floating caliper, on the inboard side of the brake rotor. When activated, the piston(s) draw both pads toward the brake disc.
On fixed calipers, there are small-diameter pistons on both sides of the rotor, providing more braking force. Typically you'll find four or six pistons per caliper. This is the type most commonly found in modern cars.

Q: How do I know if my brake caliper piston kit is bad?

A: A good brake caliper piston kit should be able to push back until it's completely seated in its bore. A bad caliper piston, on the other hand, will be difficult or impossible to push back.

Q: What is the life expectancy of a brake caliper piston kit?

A: Brake caliper piston kits are designed to last. Realistically, you can expect to get between 75,000 and 100,000 miles out of them, and even though they are one of the more resilient parts of your braking system, they can still fail prematurely.

Q: Do I need to change my brake caliper piston kit if I change my rotors?

A: So, replacing a brake caliper piston kit is not as common as replacing brake pads or brake rotors. But it's good to know when you might need to replace a brake caliper. Replace pads and rotors with every brake job, but replace calipers only when damaged or when the pistons fail to extend after applying the brakes.

Q: What happens if you don't compress brake caliper piston kit?

A: Failing to compress your brake caliper properly can lead to several issues, including: Reduced braking efficiency: Without proper compression, your brake pads may not make full contact with the rotor, resulting in reduced stopping power and longer stopping distances.

Q: Can you push the brake caliper piston kit back?

A: There are two ways to reset the position of your calliper pistons. The easiest way is with the brake pads in situ. Simply push a flat blade screwdriver in between the brake pads and twist. This will separate the brake pads and, in turn, push back the pistons to the reset position.

Q: What causes a brake caliper piston kit not to retract?

A: So if some friction has built up between the piston and the bore in which it slides, you will have a piston that either does not retract quickly enough or does not retract at all. They can get rusty inside because brake fluid absorbs moisture, causing rust in the caliper piston cylinder. This can make them stick.

Q: Do I need to clean the steering rack seal kit?

A: Steering rack seal kit as such will get dirty easily by brake dust, rainwater, and etc. That's why cleaning the caliper piston is very important when replacing brake pads. Clean the caliper piston regularly for making it last longer.

Q: When to replace brake caliper piston kit?

A: Symptoms of failing or brake caliper piston kits
Leaking brake fluid.
The feeling of a stuck brake.
Grinding/squeaking sounds.
Reduction in braking ability.
Vehicle pulling to one side while braking.

Q: What brake caliper piston kits to break?

A: Damage to calipers and pistons comes from road debris, drying or cracking from weather, or deterioration due to age. When a caliper seal fails, it can leak brake fluid, and the brakes will lose hydraulic pressure.

Q: What are the advantages of brake caliper piston kits?

A: 4 Piston calipers are physically bigger to fit the extra piston, meaning there's space for more fluid inside. More physical material and more fluid means they shed heat much better than a smaller 2 piston caliper, don't get as hot on descents, and have

We're well-known as one of the leading brake caliper piston kit manufacturers and suppliers in China. Please rest assured to wholesale high quality brake caliper piston kit at competitive price from our factory. For customized service, contact us now.

TaiZhou NiuWeiSheng Machinery Co.,Ltd.: Your Leading Brake Caliper Piston Kit Supplier