Caliper Rebuild - 3 pistons stuck
Hey everyone,
I'm in in the process of doing a caliper rebuild, but I'm having a hard time with 3 of the brake pistons. I took out the dust boots, and then used the compressed air / wood method. One of the pistons shot right out, 1 budged a bit, an the other 2 did not move at all. Is there something I'm doing wrong, or do I have frozen pistons? I'm blowing the air through the hole where the caliper would connect to the brake line - is this correct? Or should I be blowing through the bleeder nipple? Any other suggestions? I have tried prying / pulling on them since I do not want to damage them. Thanks! |
"shot right out"
Does that mean that one of the pistons is all the way out and now you can't pressurise the space behind the others? |
just use 2 screwdrivers to pry them out. should be a non issue
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Yeah, pop it back in and use the block of wood to keep it from being pushed out again.
Try to use air pressure to move all of them partially out, and then lever them with screwdrivers to get them the rest of the way out. |
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You can wrap the screwdriver with a paper towel if you're worried |
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Do pay attention to the bed-in procedure. And next time around, don't switch pad compounds without also replacing (or machining) the rotors. |
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