Rear Caliper Piston

[callen]

Can't get the rear piston in all the way to install new pads......have done rears several times...using good c clamp...old pad to keep piston straight...even started car and hit brakes which cause the piston to push out to ensure it wasn't frozen but when I go to push it back in...can't get that last 1/8th inch....ARGHHHHH was supposed to be an easy job.

callen 94 530i 91 535i 89 735il

[632 Regal]

is it from a rust ring around the outer edge of the rotor?