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

finding a brake proportioning valve

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Old Sep 22, 2010 | 02:56 AM
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llcvt15
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finding a brake proportioning valve

My proportioning valve is leaking and needs to be replaced. My mechanic told me the part is discontinued by Ford and it isn't offered aftermarket. He refuses to install a used one, and I agree with him; I'd prefer a new part. Are we both blind or am I just screwed? Thanks in advance.
 
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Old Sep 22, 2010 | 03:03 AM
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Well I guess I just answered my own question. eBay really is a hucksters paradise I guess, only thing that stopped me all afternoon was searching for the year of truck rather than 79-89... Good grief.
 
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Old Sep 22, 2010 | 05:56 AM
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That valve rarly goes out I have use them from a junkyard and had good luck.
 
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Old Sep 22, 2010 | 06:58 AM
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LMC sells them new
 
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Old Sep 22, 2010 | 07:16 AM
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I recently purchased mine from a junkyard for $25. The online stores wanted $100-$200 for a new one that might or might not hook up properly (universal). I have had nothing but good luck with the salvage one. I would say buy one at a JY and install it yourself. If it does not work, then you will be out far less than the price of a new one. If it works, you will have saved yourself a good amount of money. They are relatively easy to install. The hardest part of the job is bleeding the brakes.
 
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Old Sep 22, 2010 | 04:28 PM
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I'm wondering if there is a trick that I just don't know about when it comes to bleeding my brakes. My right rear drum gets so hot, I can't touch it after just my short 8 mile commute to work. I've bled them 4 times now and had my wife sit in the cab and push while I tighten and untighten the valve on each cylinder. Should the truck be running when I bleed them to take advantage of the power braking system?
 
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Old Sep 22, 2010 | 04:36 PM
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Air in the system wont cause the brakes to get hot, you probably have a brake cable sticking or your brakes are adjusted too tight
 
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Old Sep 22, 2010 | 04:37 PM
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Air in the brake system gives you a low pedal, and a spongy pedal. It won't make the drum get hot.

The drum getting hot 99% of the time on these trucks is caused by a parking brake cable that is sticking. A stuck wheel cylinder can also cause the brake to run hot. And we talked in another post about how sometimes these auto adjusters just seem to work too good and they make the shoes too tight in the drum, but I would leave that as a last resort.
 
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