Im having the same problem but with my rear calipers. I'm using a C clamp to twist and push it in but they wont go in. I hope I haven't damage anything. Is it really important that the brake resevoir be open? What about the bleeding cap should I unscrew the bleeding cap to let some pressure out? Help anyone.

 

Yes you can open the bleader to release the pressure if you want but I would make sure to blled the whole system when you are done then.

 

Dont use a C clamp on the rears or any kind of rigged setup. You can F up your caliper and it can seize doing that. Yes its important to take the resevoir cap off or you could rupture a brake line with the built up pressure... Skip the bleeding and go to autozone and rent the caliper tool that is needed to do it properly IMO. Turning the c clamp while twisting the piston with a wrench is not the right way and would take 10 times as long to get it done that way -if at all + you risk damaging the piston/seal around it.

 

15 dollar tool on ebay, totally worth it. I found that turning the piston counter clockwise first helps it get moving.

 

I did get a caliper tool from Autozone but I i so antique when it comes to using tools. I m going to have a friend who is more familiar with mechanic. The only reason I wanted to try it myself is because I heard it was easy.

 

RENT THE RIGHT TOOL!!!!!!!!!!!!!!!!!!! its hard to impossible to do it any other way.

 

Or buy it for $25