View Full Version : Ebrake stucks on from the caliper

11-09-2005, 03:54 PM

Sharon Silver
11-09-2005, 04:42 PM
Probably what has happened is that the o-ring around the piston has worn down and has moved out of it's slot and is binding between the piston and the clyinder wall or the ring is gone and the piston is frozen, and you gotta get a new caliper. If the ring is gone you can just replace that, and the inside ring, by getting a caliper rebuild kit. If it has a fiber piston, throw it out and get a steel one. You pop the piston out by taking off the bleed valve and putting an air gun to the open hose. BE CAREFUL, the piston will come out of there with enough force to take off the end of a finger. Clean up the inside and make sure the walls are clean and smooth. Minor scarring and build-up can be removed with a hone or 600 sand paper. Finish with some emory paper for a good polish. Do not reuse a fiber piston, it will warp and can break. You'll see where the rings go. Make sure the seats are clean and debured. Lube the new rings with some brake fluid and the piston should slide in with a little push. Put a hammer handle on the inside of the piston and push it so that you are putting as even pressure around the entire piston as possible. Don't break the ring and be very careful not to tear it. If you need a new caliper, or possibly even the rebuild kit, try Rock Auto. Their service is fast and prices are good. I'll let you be the judge on shipping charges. Goodluck. https://www.rockauto.com/applet3.html

11-12-2005, 06:28 AM

11-12-2005, 09:51 AM
The rear caliper with e-brake pistons screw in / out. Check the e-brake mechanism to see if any moving parts are binding. Get a rebuild kit for the caliper. Disassemble, clean everything with denatured alcohol. Before putting new o-ring in, screw the piston back in and check that the e-brake machanicals are working properly. If so, remove piston install o-ring, lube with brake fluid and reassemble by screwing piston all the way until it bottoms out. Do NOT force the piston to bottom to tight. Just till it bottoms, then back off about 1/8 of a turn. Once all has been reinstalled, bleed as normal. The piston will self adjust by pressing brake pedel several times. Hope this helps.
Good luck.

11-12-2005, 12:20 PM
Here's a question for you, has the car been sitting with the parking brake on? If so, your brakes are most likely rusted up, just take a hammer and hit the caliper a few times till it comes loose. That should solve it, ONLY if its been sitting.

Now if your driving it, which is always the first assumption, do what these other guys said and you should be fine. Good Luck!