Need help quick on this one, gotta drive to work tomorrow!

I was getting started with a routine rear brake pad replacement, got the old pads off the driver side and now I can't retract the piston to put the new pads on!

I put a c-clamp on the old pad on the piston, took the lid off the reservoir, and turned but it would not retract, so I opened the bleed valve, still would not retract... i removed the whole caliper from the truck including removing the handbrake cable - and it STILL won't retract.

I put it all back together except not on the disc, with a c-clamp in place to prevent the piston coming all the way out.. had a friend push the brakes lightly with his hand - the piston came out a little bit till it hit the c-clamp. now it's stuck out even further so there's no way I could reassemble this junk.

what can I do?

edit - 1991 trooper with rear disc brakes

<small>[ June 17, 2003, 09:30 PM: Message edited by: Eric D ]</small>