Front brake calipers dragging, Fresh rebuilt, just bled Options

[VaccaRabite]

So, using the long tubes method, I got my brakes bled tonight. The pedal is *really* solid.

But, when I went to each caliper, the Drivers front caliper was tight against the rotor. Passenger front was dragging, but not as much. Both rears were dragging a little. On each rotor I was able to turn it, and it started to come free. However, especially the drivers front, they are not free wheeling.

The rears are easy, I just re-vent them.
The fronts, though. Whats going on there?

I was really stomping on the brakes getting the prop valve bled. I can't imagine that I damaged something. According to Haynes there is no front adjustment. What is to keep them from dragging?

The pedal cluster has also been rebuilt and bushed with bronze bushings. Everything with the brakes has been renewed (rotors, pads, calipers [ E.Shea in the back, I rebuilt the front] hard lines, soft lines) except the prop valve (which does not need it).

Zach

[Eric_Shea]

Let's start with the pistons. If you did not pull the pistons as you mentioned then this is your problem. The pistons and the bore they sit in are the essence of the rebuild. So; did the pistons come out? Did you hone the bore?

The knock-back mechanism is the mechanism inside the piston that rides up and down on the metal shaft that resides in the middle of the piston bore. If that was not cleaned thoroughly during the rebuild process this may be your cause.

If you didn't pull the pistons you would have two major seals left over.

Not talking about springs or piston positioners... just pistons and their internals.