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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

Brake Pedal doesn't Return

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Old Feb 14, 2017 | 02:38 PM
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Brake Pedal doesn't Return

After pushing the brake pedal and releasing it, the pedal will not return to it's original position.

This truck has had a complete brake system over haul from new master cylinder, to lines, proportioning valve, etc.

While working t get the brake lights to work, I found the brake pedal doesn't return to it's original position. Of course I can lift it back place and it'll stay until pressed again to the same result.

Old trucks are frustrating, but this one has been more than all the others combined.
 
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Old Feb 14, 2017 | 03:28 PM
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New crappy master cylinders, or lots of air in the line will do this.
 
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Old Feb 14, 2017 | 03:29 PM
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Have you checked that you have vacuum in the booster. Run the truck for a moment and then turn it off. Now pull the vacuum line from the front of the booster. If you hear vacuum, it should be good. No vacuum then you need a booster. Seals let go and leak. Do you hear any vacuum leaking when you press the brake pedal?
 
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Old Feb 14, 2017 | 09:30 PM
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On a car I am restoring I had the brake peddle pivot rust up so it would not move as it should.
I found this when I had the peddle assy. out of the car to fix the clutch linkage side of it.
Dave ----
 
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