Combines concaves plugging

You will have to run your concaves very tight (1 or tighter) to force the grain through. It will take a while for the concaves to clean themselves after having been plugged. We had a field day at our dealership about 4 yrs ago and harvested some 35-38% corn and this is what we had to do. By the way, when adjusting the concaves, use the indicator on the side of the machine, not the instrumentation. Good luck

I had the same problem 3years ago in green corn. I clled a Case feild rep in East Moline, he told me to keep closing the concave and speeding up the rotor until it cleaned up and stoped plugging. I think we had the rotor at 500-600 and the concave at 1. We had to cut our speed down to about 3 mph, removing every other wire from the concaves helps and makes cleaning easier also slowing the vane down will help build up pressure in the cage and keep it cleaner. If you would like the guys name I talked to e-mail me and I will give to you, he is retired now but he still does some consulting. This process helped us, hope some of it works for you.

Which style rotor are you operating withIJ Is it a standard or a specialty rotorIJ

Thanks for all your help. We have the standard rotor. Thanks again we will try to see if these tips help it.

for high_med and dry corn the best configuration (if wanting high capcity, low loss,etc) remove every other wire from the 2nd and 3rd concaves. It is not a good idea to close the concaves down tight. Start w_a concave opening roughly the size of the cob and work from there. Just as increasing the concave clearance too much can lead to higher loss, you can go too tight and you actually increase loss and power consumption. Vanes should be front: mid or retard, rear: retard.

To help concaves that are hairpinning, tighter concave setting and_or a higher rotor speed will help. I think that you need to raise rotor speed for sure.

After removing my wires I put 1_4 " stove bolts and nuts in all the holes.Alot of bolts but it works. This was suggested by Marvin Gorden when I purchased his Gorden Bars to put on my 2366 specialty rotor.

one section of round bar concaves