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            2018 Acura ILX Base 4 Cyl 2.4L expand_more
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            Brake Caliper Piston

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            Brake Caliper Piston Products

            In disk brake systems, the brake calipers are the ones that squeeze the brake pads against the disk or rotor of a wheel. One of the parts that make this "squeezing" action possible is the Brake Caliper Piston. When you step on the brakes, the pressure made by the brake booster or the master cylinder pushes the brake fluid through the fuel lines and out of the cylinders in individual wheels. This pushes the piston, which pushes the pads, hence the "squeezing" of the rotor. This squeezing causes the vehicle to slow down. Over time, the pistons get worn out and may get stuck. Worn-out pistons can cause the braking system to fail. So when the brakes seem to fade, you might want to get a new Brake Caliper Piston. Made of high-quality materials, this piston is designed to work well with your car's brake calipers. Enjoy renewed braking power when you install this Brake Caliper Piston as a replacement to the old and failing one. Browse through Auto Parts Warehouse's product catalog and find the part that best fits your ride. Choose from our wide range of products that have high levels of quality and craftsmanship. So go and get everything that your car needs only from your reliable online source of quality car parts, Auto Parts Warehouse.

            Repair Guides

            Having a Brake Caliper Piston Problem? Here’s How to Fix It

            A broken brake piston is a common cause of disc brake malfunctions and should be immediately be taken care of, especially if the brakes are no longer functioning. And if you're planning on fixing a brake caliper piston by yourself, you need to do so at a slow and methodical pace to ensure that no mistakes are made during the process. So take your time and be sure to follow the steps below.

            Difficulty level: Moderate

            What you'll need:

            • Piston repair kit
            • Car floor jack
            • Tire iron
            • Ratchet set
            • Wrench
            • C-clamp
            • Vise-grip

            Brake caliper piston removal tool/air hose

            Step 1: With the car parked on a stable and level surface, engage the parking brake and raise the vehicle using a floor jack. Once it's lifted off the ground, place jack stands on your vehicle's designated jacking points and remove the jack.

            Step 2: Remove the lug nuts with a ratchet or tire iron. You can also loosen them first before raising the wheel for added leverage, but make sure not to completely remove the nuts from the threads until the wheels are in the air. Once the nuts have been taken off, pull out the tire from the wheel hub and place it on the ground face up.

            Step 3: Detach the brake pads from the caliper by removing the retaining clips. Use a vise grip to loosen the clips and slide out the pads.

            Step 4: Have some press on the brake pedals, which will force the calipers to expose the brake pistons.

            Step 5: Remove the piston from the brake caliper one at a time. You can use a special removal tool for this, although you can also use a pressurized air hose. For the latter, hold one piston with a C-clamp and blow out the other one using the hose. Wrap the caliper in rags to absorb any brake fluid sprayed out by the pressurized air.

            Step 6: Clean out the inside of the caliper, the brake disc, and the brake pads. We also recommend putting an oil pan below the caliper and letting the escaping brake fluid drain into it.

            Step 7: Inspect the piston for signs of damage and wear. Scrub off any dirt and rust and replace any worn cylinder seals, dust boots, and retainer pins. However, if the piston itself shows signs of cracks or fissures, it is no longer safe structurally and must be replaced completely.

            Step 8: With the pistons cleaned and its seals and pins fixed or replaced, slide the pistons back into the caliper. Take note that the piston must be properly oriented with the rotor.

            Step 9: Reattach the brake pads. The pistons need to be pushed into the brake rotors in order to slide the pads in, so either have someone step on the brake pedals again or compress the brake caliper with a C-clamp in order to slide the pads back into place.

            Step 10: Return the tire to the wheel hub and secure it with the lug nuts. Lower the car gently into the ground.

            Step 11: Refill the brake fluid reservoir and test your brakes. Take note especially of a spongy feel of the pedal; this means air has contaminated the brake pedal and must be bled out.

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