Caliper piston problems help!

[Big B]

Hey I was changing out my rotor and brake pads when I realized that the driver side caliper piston would not press down back in place. I have used everything to try and get it back in from a c clamp and a block of wood to the caliper spreader. It won't go back in and the other caliper piston goes in fine. Any quick tricks to getting it back in?

 

[93_tsi_fwd]

Loosen the bleeder valve then try the C clamp again. Ill leak the brake fluid out once being compressed then just tighten after the piston is in.

 

[Big B]

Ok I'll try. But the piston is all the way out and almost feels like its locked. I bent the c clamp I was putting so much pressure and it still wouldn't budge. Can fluid pressure cause it to be that difficult? Is it possible for a caliper piston to become locked from being pushed out so far?

 

[Rsawd95dsm]

Inspect the dust cover of the piston for tears if it has any it could be that dirt and junk got caught up in there and caused the caliper piston to seize