Combines Feeder chains

Could be mud build up on floor inbetween front and rear chain. Could be grain pooling inbetween chains and you would have to let lower drum stop for rear chain down. Could be mat of material from front chain bulldozing into rear tention drum and you would want to raise lower rear feed tention drum stops. Hope you get it with that. Dan

Had that happen on my N6, the brother inlaw sucked in such a wad of wheat that the rotor was plugged( the entire length),had to remove a section of the cage to unplug it.I asked for capacity help in previous posts.Maybe same trouble I'm having need to shim the helicals to improve flow through the rotor.Brother in law said the N6 was back feeding before he sucked in that wad.

Yes material could be coming from as far back of cylinder. Make sure rock door or concave isn't mudded up. Cylinder bars need to be in good shape and as close as possible to concave to get good suction. Just looked in a feeder today that had been shut down when full. I found a bail of material just in front of the square tube in front feeder that was building and getting ready to fly out the front or go under the tube. If it goes under the tube it could stop the chain, jump the chain, or rumble threw the cage. Newer machines have false floor level with top of square tube so it can't come out the front but it can go under and cause same problem. If you have material building in front of that tube you need to build a false floor from bottom of square tube forward to prevent building up of material. Good luck. Dan

To much clean grain in returns from having your bottom seive closed to far. When the returns are dumped back to the cylinder they get thrown onto the feeder chain and it acts like an elevator to bring the grain back to the front! This can happen on almost any combine.