[dennisk]

I have a JD 7720 that made a popping noise in the feeder house while shelling corn last fall with a 643 corn head. I checked the feeder house drum and chain adjustments, setting it according to the manual, and even tried running the feeder house chain tighter and more loose than the manual settings, all of which did not remove the noise. Operating the head at different speeds did not help as well. Interestingly, when I switched to beans the noise disappeared, completely. I am wondering if the noise is caused by worn/weak cross-auger paddles, whereby an uneven feeding of ears into the feeder house causes the feeder house drum to move up and down violently. The paddles don't look healthy, and I'm hoping they are the problem. Thank you for your help!