I have read a few posts (search) on this issue but not sure what applies to a 1970, so need yr help.
First,this is a full resto, reconditioned, but all original components and new steel brake lines....I cannot get brake fluid to the back drums. I assume the proportion valve (cleaned) is the culprit and somehow needs to be reset or adjusted.
I am using a hand bleeder vac pump that pulls the air and fluid out. I also tried it w/o the bleeder pump, same result. Front disc's bled out just fine. Thanks.
You should have started with the brake farthest from the master,passenger rear when doing all new lines.
After you get fluid there the rest are a breeze.
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