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Old 04-16-2003, 04:36 PM
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On some of the Fords with early disc brakes you had to unscrew the get-up where the wire goes in to "re-arm" or center up the pressure diff. valve, once the light came on. I've had some trouble in the past with them too, but I always seemed to work it out one way or another.. Sometimes with a pressure bleeder you can persuade the valve to go in the right direction and get the job done. If you have someone stepping on the brakes for you, it's touch and go. The Brake peddle guy should have the key on and let up on the brake as soon as the light goes out. The guy with the bleeder wrench should then go to the other end of the vehicle and work with as light a pressure applied to the peddle as possible.

If push comes to shove, Willwood makes a good adjustable proportioning valve. It comes without that pesky pressure differential spool. No brake light feature either.

I think you can make it happen with what you've got. Don't give up yet...
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