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Old 10-15-2020, 11:53 AM   #6
sick472
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Join Date: Jul 2015
Location: Sedalia Mo.
Posts: 1,130
Re: All new brake system: rears lock up and drag with weight in bed?

Quote:
Originally Posted by 72c20customcamper View Post
Seems weird the rears would lock up when loaded only . If it was the portioning valve giving to much pressure they would lock all the time more so when empty. Same with the master. Could it be the parking brake is engaging when the rear drops a little? Could be causing the cable to tighten .
^^^^^^^that's where I'd look first, That, and the rest of the brake system is a bit above my pay grade.
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1972 C10
1976 C10 (parts truck)
1985 K20
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