Posted 3/22/2009 18:28 (#652780 - in reply to #652724) Subject: RE: Freightliner air brake problem
Check for a crack in the service line from your tractor to the trailer. It'll go un-noticed until you step on the brakes, then the air vents out the line instead of going to the trailer.
It's just a WAG or at least a shot in the dark, but we've had this problem all winter with our trucks at work.
Freightliner air brake problem
