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Frame/Suspension/Brake... Talk & Q&A All things... Frame/Suspension/Brake

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Old 05-13-2019, 05:56 PM
dmw56's Avatar
dmw56 dmw56 is offline
Busted and Rusted on Route 66
Join Date: Dec 2007
Location: Edgewood, New Mexico off Route 66
Posts: 6,134
Default Drum brake problem!

I'm to the point of bleeding the brakes and seeing what I've got. So far the front discs are working but the back drums aren't.

There is a small amount of fluid coming out of the wheel cylinders but not enough to move the cylinders. I've bled them several times and I'm not getting any air.

I've checked all connections for leaks and fixed them. The vacuum is not hooked up engine isn't running yet. That shouldn't be an issue but I could be wrong. Wrong master and valve?? I'm stumped any suggestions please. Thanks guys!

This is what I have. GM disc/drum master cylinder with 7" dual power assist. Front brakes hooked up to the front reservoir and rear drums to rear. Hope that's right?

GM proportioning valve hopefully it's a disc/drum.

9 1/2" GM brakes new wheel cylinders and shoes
dmw...Livin' on Route 66

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