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Old 09-18-2016, 07:38 AM   #7
notsolo
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Join Date: Apr 2008
Location: Md
Posts: 2,485
Re: 63 C10 - Need info on upgrading to power brakes Currently have disc/drums

Check that your brakes are working at each wheel 1st, jack up 1 at a time and see if each wheel holds when brake is applied. Could be the prop valve next to M-C is not working. If you get a M-C and booster from a parts truck, get the prop valve with it.
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