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Old 01-29-2011, 07:15 PM
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Residual Check Valve

I'm done with the front disc brake conversion on my 70 El Camino except the the brake lines I was planing to order from Inline Tube.Do I need to run a residual check valve along the new disc drum proportioning valve at the master cylinder.

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Old 01-29-2011, 07:24 PM
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residual valves are for brake systems where the master cylinder is lower than the wheel cylinder or caliper. they stop the fluid from leaking back into the master cylinder
all you need is the proportioning valve for the disc brakes, and you are good.
if its all in the stock location.
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Old 01-30-2011, 10:09 AM
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A 10lb residual pressure check valve is required for all axles that have drum brakes regardless of the mounting position of the master cylinder. The valve holds pressure against the seals in the wheel cylinders and keeps the return springs on the brake shoes from retracting the shoes too much when you release the brake pedal.

You may have one already in your proportioning valve or in your master cylinder.

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