In Reply to: seized caliper! posted by sterlingsilber on January 24, 2002 at 07:07:58:
Using compressed air and an air gun blower attachment, push the piston out by pushing air through the port where the brake line threads in. Start w/ relatively low air PSI and increase until the caliper piston pops out.
Check the slide pins too. I like to use a little caliper slide grease on these. It might be possible that there is some binding here but kind of unlikely.
Look for scoring and/ or corrosion on the sides of the piston and inside the caliper housing.
Because you have the caliper apart completely now, you will definitely want to put new seals and dust boots in it. Cost is aroungd $20 including shipping.
Clean all parts thoroughly w/ brake parts cleaner prior to reassembly. If the piston or caliper housing have any scoring or irrepairable corrosion, then you will need a new caliper or new piston at the least.
And hey, while you are at it you better do the other one too. Maybe while you are at it, you should do the rears too. Hey while you're at it, maybe upgrade to some stainless braided brakelines too. HEy while you are at it, maybe upgrade to the 25mm master cylinder too!
Funny how that little emergency project expands into a chance to upgrade!