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Bleeding the brake system on the 68, as usual I was starting with the passenger rear. As soon as the front brakes (discs) got some pressure the brake fluid stopped flowing to the rear. I feel confident the pressure differential caused the valve to shut off the rears completely (actually a great safety feature).
My question is how to get around this wonderful feature so I can bleed the darn brakes. the manual was a little vague on this one.
 

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At one of the local parts stores I purchased a vacum gage & pump that is good both for adjusting the idle screws on the carb and bleeding brake fluid into a little cup without having to pump the brakes. That has worked well for me in both respects.

Martin
 

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Bleeding brakes

When this happens (the diff. valve pops to one side) you will get the effect you saw. The proper way to re-center the valve is to close all ports and pump the pedal -- a lot!.
 
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