Junior Member
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Join Date: Apr 2020
Location: Boston
Posts: 10
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Junior Member
Join Date: Apr 2020
Location: Boston
Posts: 10
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Seized Front Caliper Piston
I have a '15 Trail Premium with about 90k miles. This morning I started the process of replacing my front brake pads and rotors. At first, it took about an hour just to get the seized caliper pins removed. Once they were out, I was able to remove the caliper from the hub and remove the pads and rotor. Once the old pads and rotor were off, I tightened the new rotor into place and started pressing down on the caliper pistons with the old brake pads.
Here is where the problem started...
I was able to push three of the four pistons in until they were fully recessed. I noticed the fourth piston was not budging whatsoever. I had opened the reservoir and tried to pump the brakes and pushed in again. Nothing. All I have for tools to help with pushing the pistons in are some c-clamps, and even those won't help with the last piston.
Here is my question... Should I shell out the money and get two new OEM pistons and fully replace the old ones, or should I bring it in to have a mechanic look at them and hopefully fix them? I try to do all of my maintenance, and I haven't trusted some mechanics in the past but that is subjective to certain shops.
If any of you recommend I buy new calipers, which ones would you recommend and what is the actual process of replacing them? I'm familiar with bleeding brakes, but not sure if there is extra work to be done on the brake lines when replacing calipers.
Thank you guys, I look forward to your advice.
Bobby
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