Turn it the other way. I've never seen arrows on a brake caliper so how do you know it's pointing in the direction to retract the piston or adjust it out?
Ford is the only manufacturer that has refused to give up this miserable design and switch to what Chrysler has always used. If the piston turning tool doesn't work you can unbolt the parking brake lever, use a wrench to turn the adjusting bolt about 1/8 turn, then push the piston in a little with a c-clamp. Don't use a lot of pressure. After it moves in, turn the adjusting screw some more, then push the piston in some more. Repeat that until the piston is fully retracted. If you run the adjusting bolt in too far at once it will expose the rubber lip seal. The seal can get ripped on rust on that bolt or it can allow some air to sneak in.
Once it's installed you will have to exercise the parking brake repeatedly to get the pistons to adjust out. They won't do that automatically by pressing the brake pedal like the front ones will. Ford has a real big problem with parking brake cables rusting tight in as little as a year. If that is the case you can use a large pliers to work each lever right at the calipers.
Also be sure to never push the brake pedal down more than half way to the floor when you work the front pistons out. Doing so can damage the master cylinder if it's more than about a year old.
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Monday, April 15th, 2013 AT 11:42 AM