Posted 10/8/2011 18:46 (#1995763 - in reply to #1995682) Subject: Re: Semi is dumping air out of the bendix air drier and can't figure it out.
Check your governor! When your governor hits 125 psi it purges to the air dryer to allow it to blow out moisture. The governor could be sticking on purge cycle allowing the air from governor to come out the dryer. Smack the governor and see if it'll quit.