Seized Brake Caliper Slide Pins

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As we discussed in the previous article, How To Free Seized Brakes, it is possible the brake caliper slide pins can become stuck or seized, so we will look at how to fix that here.

Why Brake Caliper Slide Pins Seize

As before, with the brake piston boot, the caliper slides also have a rubber boot that if damaged can let moisture and dirt in, causing it to seize. In fact, in some cases moisture can occur even if the boot is not damaged, due to condensation caused by the constant heating and cooling in and around the brakes. So it is always a good idea to check the caliper slides are nice and free, and to pop them out and clean and lube them when you do any work on your brakes.

Lets take a quick look at why you would want to spend some time trying to save the caliper slide pins:

Okay, so in the video above, the slide pin kit isn’t available as a separate part, you need to buy it along with the whole caliper. If you can get a separate slide pin kit for the vehicle you are working on, and providing it’s not a crazy price, then you can afford to sacrifice it should things head that way, lets take look at an example:

So in the above video the guy can get replacement pins for $5.50, however if you can’t then you need to do it in such a way that you preserve the pins:

The general idea here is to use some heat and some hammering action to free up the slider pins.

If you want to use hammer action but not heat:

The three videos above give you three options:

  1. Using only heat
  2. Using heat and hammer
  3. Using only a hammer

Pick which one works for you and go for it.

In some cases it might not strictly be corrosion that has caused the caliper pins to seize, here is a short but interesting video suggesting a small modification to the rubber anti-rattle sleeve that can be found on some pins:

As you can see in that video, the pins aren’t really corroded at all where they slide inside the caliper carrier, but the one with the rubber sleeve was stuck, so I think this is a valid consideration if you find you are in a similar situation.

So there you have it, a quick and easy guide with plenty of video content to help walk you though dealing with the issue of seized brake caliper slide pins. I hope this has helped you. If you know of any other methods for dealing with this problem, please leave them in the comments box below, I’d love to hear from you.

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