Posted 3/5/2012 10:06 (#2268890 - in reply to #2268376) Subject: Re: peterbilt vibration
Traverse City MI
Check the output nut on the trans. Kenworth have an issue with them loosening up enough to cause a vibration, but i have seen it in other brands as well. If you see any rust tracking around that nut it needs to be tightened. We ALWAYS use red locktite and a 1" impact on them. Has fixed a lot off issures with vibrations.