Rear Caliper Pistons

[MatthewH]

Just finished rebuilding my original caliper. I cleaned up the piston, and replaced the main seal and piston dust boot. It's now moving freely as it should. I'll be rebuilding the caliper on the other side soon too so they're in sync - that side also felt stiff when I replaced the discs and pads but wasn't completely seized.

If anyone's interested I can post a guide for this process, including photos and part numbers.

[1781cc]

Yes please! good to have for future

[Audidothat]

Have just had to spend £60 getting my O/S caliper freed off.

I have been using the EHB a whole lot more than previously but it obviously didn't like being parked up for 7 days. At first operation the dash lit up like a Christmas tree and the caliper stuck open (which was lucky!). N/S worked fine.
Despite my cycling through on/off numerous times, spraying a hose on it whilst doing so and giving it a couple of 'love taps' with a rubber mallet, it wouldn't work.

Anyway local mechanic plugged the car in and cycled the pistons in and out as though the pads had been replaced, I didn't work at first so he stripped it down apparently (whatever that means), anyway all fine now.

[onetwentie]

Originally Posted by MatthewH

Just finished rebuilding my original caliper. I cleaned up the piston, and replaced the main seal and piston dust boot. It's now moving freely as it should. I'll be rebuilding the caliper on the other side soon too so they're in sync - that side also felt stiff when I replaced the discs and pads but wasn't completely seized.

If anyone's interested I can post a guide for this process, including photos and part numbers.

MatthewH - Are you saying then that the problem was just the piston, and the new seals fixed the issue? was that the original symptom, that the caliper wouldn't move in or out?

I wonder if that was the issue with the replacement which you purchased too?

Out of interest, what led you to try the seals? was it self diagnosis??