Posted 6/16/2009 23:42 (#747904 - in reply to #747495) Subject: RE: JD 4400 combine
I hope this isn't your problem but it's a possibility. Check to see if the rear motor mounts under the powershaft housing are intact. If broken, it will allow the powershaft sheave to deflect towards the rear of the combine making it difficult or impossible to tighten the upper drive belt.
JD 4400 combine
