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Old 01-15-2014, 09:24 PM   #1
64witha383
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Brakes question

Working on a 64 C10 with disks all around. I should only have two lines coming from the proportioning valve, correct? One for the front and one for the back and they both just tee off right? This truck had a bunch of stuff already done when it came to me and trying to figure out whats been done correctly and what hasn't is worse than doing it all myself in the first place.
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Old 01-16-2014, 12:30 AM   #2
66 C10 383
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Re: Brakes question

Is yours the adjustable type or the factory style fixed type? Most of the original style have 2 inlets from the master (front & rear) and 3 outlets (1 rear and 2 fronts). Both front lines will come out of the prop valve and go to each front caliper.

Does your valve have 2 inlets and 2 outlets? If it has 3 outlets, is one outlet plugged off?
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Old 01-16-2014, 07:44 AM   #3
PGSigns
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Re: Brakes question

Show us a picture of what you have.
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Old 01-16-2014, 10:24 AM   #4
64witha383
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Re: Brakes question

It's from CPP if that helps but it has 3 outlets, one rear and two fronts. The top front one is plugged at the moment. What threw me off is the new hard line kit appears to have 3 lines that go up to the prop. valve.

Last edited by 64witha383; 01-16-2014 at 10:36 AM.
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Old 01-16-2014, 10:25 AM   #5
64witha383
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Re: Brakes question

I'll get you guys a pic when I get home today.
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Old 01-16-2014, 07:56 PM   #6
66 C10 383
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Re: Brakes question

Look at post 26 page 2. It shows the prop valve and what each port is for.

http://67-72chevytrucks.com/vboard/s...42#post5156042
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http://www.67-72chevytrucks.com/vboa...d.php?t=540838

Updated Build Thread - Modern Relic - 66 C10 536 Dark Aqua
5.3/4L60E - BTR Stage IV Truck Cam - Vintage Air - Dakota Digital
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Old 01-16-2014, 08:51 PM   #7
64witha383
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Re: Brakes question

That's perfect Doug, thanks a lot. Should help give me a lot better idea of what goes where. The previous owner had the top port plugged and they were split out of just the bottom one. Now to get these brakes going and on to motor assembly.
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