The pistons are threaded and if you force them they'll become damamged. You need a special tool that's used to twist the pistons back in. (Bought at any parts store). You insert an socket extension into one end, then line up the prongs into the holes in the piston and turn them.
Tell the parts store what vehicle you have and they'll tell you which tool fits.
Saturday, November 20th, 2010 AT 6:14 PM