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-   -   Velvac Vacuum brakes? (https://67-72chevytrucks.com/vboard/showthread.php?t=563995)

Black 'n' Blue 02-01-2013 01:52 PM
Velvac Vacuum brakes?
 
Hey after some researching I have determined that I have a vacuum brake set up on my truck for the trailer. My question is, how do they work?


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