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05-29-2011, 10:16 PM
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#1 |
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Senior Member
 
Join Date: Feb 2011
Location: Clovis Ca.
Posts: 632
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How Do I Reset the Proportioning Valve ?
I guess I lost my rear brakes a short while ago, as the result from a bad wheel cylinder. I knew that I needed new shoes, wheel at some point I broke a front brake line and the master cylinder went dry . NO BRAKES !!! not fun. OK I replaced all of the brake lines the bad wheel cylinder and the shoes. I benched bleed the master cylinder first next I bleed the front brakes and now I'm not getting any fluid out the back. A friend of mine told me I need to reset the check valve inside the proportioning valve. I can not figure this out, I need some help.
Last edited by Daddy Brim; 05-30-2011 at 05:52 AM. |
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05-29-2011, 10:36 PM
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#2 |
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Senior Member
Join Date: Feb 2011
Location: Clovis Ca.
Posts: 632
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Re: Resetting Proportioning Valve
I should of added this is on a 67 C-20.
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05-30-2011, 05:53 AM
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#3 |
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Senior Member
Join Date: Feb 2011
Location: Clovis Ca.
Posts: 632
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Re: Resetting Proportioning Valve
ttt
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05-30-2011, 07:09 AM
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#4 | |
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just can't cover up my redneck
Join Date: May 2004
Location: Columbus OH
Posts: 11,414
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Re: Resetting Proportioning Valve
It's basically a pressure balancing switch, so you need to relieve the pressure on the side that has more.
Open a bleeder on the higher pressured side and push te pedal down until it gets to the floor, it may "click" at that point. It's not always that easy,but it can happen. If not, close that bleader and "slam" the brake pedal. It's mostly about "speed", hit it quickly,but forcefully. You will not "feel" it with this method though, you will have to check.
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05-30-2011, 08:27 AM
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#5 |
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Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Resetting Proportioning Valve
if you have the original drum brakes you do not have a proportoioning valve but a distribution block
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05-30-2011, 09:12 AM
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#6 |
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Active Member
Join Date: Jul 2007
Location: Centrally located between Houston, Austin and Waco. BCS area.
Posts: 7,947
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Re: Resetting Proportioning Valve
^ Correct.
Did you also replace the rear brake line hose? If you have the drums and you're not getting fluid to the back brakes then either the part of the master cylinder that controls the rear is defective or you have a blockage to the rear brakes. I'd start by loosening the connectors starting at the master cylinder while having someone apply the brakes to see if you have fluid there and work backwards. And if you replaced the master cylinder, new ones are not what they used to be. |
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05-30-2011, 11:00 AM
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#7 |
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Senior Member
Join Date: Feb 2011
Location: Clovis Ca.
Posts: 632
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Re: Resetting Proportioning Valve
So to reset a distribution block is it the same as a proportioning valve ?
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05-30-2011, 11:13 AM
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#8 |
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Registered User
Join Date: Dec 2009
Location: DFW, TX
Posts: 764
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Re: Resetting Proportioning Valve
There is nothing to reset on a distribution block. Be sure to check the rubber lines. They will swell with age and eventually block off the flow of fluid.
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72 Cheyenne Super 1/2 LWB White/Dark Yellow 07 Avalanche 2LT 74 Sleek Craft Rebel Jet Boat W/Pontiac 400 Last edited by OhOneWS6; 05-30-2011 at 11:14 AM. |
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