Combines whats causing more chaff on right side

I HAVE HAD THAT PROBlEM BEFORE AND WE FINAllY DETERMINED THAT THE PINCH POINT ON THE ROTOR WAS WRONG. THEY ARE SET WRONG FROM THE FACTORY AND THEY NEVER CATCH IT AT THE DEAlERS EITHER. I'll BET THAT'S WHAT THE PROBlEM IS. IT WIll MAKE A MEW MACHINE OUT OF ANY IHC ROTOR.

Could you please explain what you mean by "pinch point". I am not familair with that. We also have more resdiue to the right, did put on curved spreader bats on the right spreader, it spreads the entire width but can still tell it heavy to that side. After making a around, it looks a good spread from 30' head because the material ends up right besde the previous heavy swath, even though we just have a 20' head. Standing behind the combine, you can just tell more material goes that way.

"Pinch point" refers to the left to right adjustment of the concave. It should be adjusted so that the seventh concave bar from the left is closest to the rotor. The operators manual has detailed instructions on how to make the adjustment. It can also be changed for special conditions. But the adjustment has a major affect on when threshing takes place and how the chaffer is loaded.

To elaborate on John W's comments, the factory concaves are not "line-bored". If you see this term describing aftermarket concaves, it means the shape of working surface is circular and of roughly the same diameter as the OD of the rotor, allowing the distance between the rotor bar and the concave to stay pretty constant over the full width of the concave. With the factory concave, envision the concave as a larger circle placed on the outside of a smaller circle that is the rotor. As you move the larger circle toward the smaller circle, they contact at one point, which is the pinch point for the crop. CIH considers the location of the pinch point to be critical, and I have no reason to doubt them.

mxz600, Scroll down the page to 9_13_02. There is a pretty good explaination on how to set the pinch point of the rotor. K.A.

Here's the link to keep you from having to search.