[Vwdiesel] Brake Lines

[travis gottschalk]

My brother found out that the rear truck lines are the same as the front Vanagon brakes I think. But only if don't have the proportioning valve. Also my brother has just replaced all of his hoses and pistons and front calipers and took out the proportioning valve (that measures weight on back engine and brakes from to back accordingly on 1980's, ,my 1981 didn't have one) he says the backs stop first and the brakes feel more spongy. Is this a bad master cylinder or is it the proportioning valve that was taken out. He wants to know before this weekend when he is making a trip from Minnesota to Wyoming to visit me. I thought the rear brakes stopping first might be the self adjusting part of the brakes might need to be pushing out again with the new rear pistons. 
 
Travis G
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