76 Bronco disk brake seizing
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76 Bronco disk brake seizing
hi - new to the board but I have one I can't figure out. 1976 Bronco with factory power disk/drum set up. The front passenger side disk seizes up after about 3 miles of driving. It eases off after the bronco sits for a day.
I replaced the calipers, flexible hoses from the line to the caliper and flushed/bled the lines had the drums and disks turned and new pads. The prop valve works as the rears don't lock before the fronts and braking seems right - until it seizes.
When I flushed it, the lines were nasty - junk floating in cloudy fluid - likely the factory fluid or sometime in the '80's (my best guess is that the truck sat in a garage from the late 80's-early 90's until very recently. They worked fine until it sat for a year while I rebuilt the engine I get the motor in, running and ready to go and now this. Booster, MC, prop valve and hard lines are original. everything from the lines out is new. Any help or ideas would be appreciated.
Thanks
I replaced the calipers, flexible hoses from the line to the caliper and flushed/bled the lines had the drums and disks turned and new pads. The prop valve works as the rears don't lock before the fronts and braking seems right - until it seizes.
When I flushed it, the lines were nasty - junk floating in cloudy fluid - likely the factory fluid or sometime in the '80's (my best guess is that the truck sat in a garage from the late 80's-early 90's until very recently. They worked fine until it sat for a year while I rebuilt the engine I get the motor in, running and ready to go and now this. Booster, MC, prop valve and hard lines are original. everything from the lines out is new. Any help or ideas would be appreciated.
Thanks
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