brakes Brake caliper piston stuck?

[Guest Anonymous]

i replaced my front brake pads last night. on one of my calipers i could not get one of the pistons to push back in so as to fit the new pad...

so what do i do now?

any thoughts, guys?

[Guest Anonymous]

and check it out on the bench. May as well take them both off and put a kit in it.

Don't be afraid to break hydrualic connections.....you need to replace the fluid at least annually anyway.

MFB

[Guest Anonymous]

did you try pushing it back in with a C-clamp?

put an old brake pad in there and them press the

pistons back in with a clamp.

[Guest Anonymous]

But if they are not easy to ush back, maybe it is a sign a rebuild is in order soon.

[Guest Anonymous]

I have been experiencing one of my front brakes sticking on.On inspection I found the same problem.I couldn't force one of my pistons back without resorting to unreasonable force.Tried all the release fluid/cleaning techniques but to no avail.I have decided on a replacement caliper.Sorry.

[Guest Anonymous]

Wedge all three pistons that move OK with old brake pads, chunks of steel etc; then have (hopefully) lovely assistant slowly press brake pedal until the stuck piston moves. Don't let it pop out or you'll have a mess.

Once it moves, you should be able to push it back in place. If it's still stiff, work it back and forth awhile. I've had good luck with this technique--and to keep the piston freed up, I carefully cleaned around the piston's dust boot and pried it loose (with the piston extended). I then took some silcone grease (it's made for this purpose--won't damage rubber parts)and dabbed it on the piston sides. That'll help lubricate it.

However...it'll probably start sticking again in a year or so...then it's replacement/rebuilt/rebuild your caliper time.

Cheers

Mike

[Guest Anonymous]

AVAILABLE FROM ANY BMW DEALER.

[Guest Anonymous]

i'll give the clamping idea a good try. i hoping that the piston is just wedged in there and can be freed by force.

thanks guys.

[Guest Anonymous]

If it's still hooked up to the lines and won't go back could be hoses...

If it were me, I would replace both calipers, pads, and hoses, don't go cheap when dealing with brakes. From the lessons learned dept.

------------

BigDog

'76 2002 BigBrakes

[Guest Anonymous]

34-11-1-103-289 for 2002, about $55

34-11-1-158-692 for 2002tii, about $40

A kit covers one caliper - 4 piston seals, 4 dust seals, 4 dust seal clips.

Given these prices, check out the cost of a rebuilt caliper before deciding.