CNH 2206 cornhead

We have a 2206 cornhead that last year about midway through picking, the long bolt that runs in the end of the spiral broke allowing the spiral and stalk roll to fall off. I got all of this fixed, but the timing on that particular roll is somehow off a tad to where the bolts that hold the knives on strike the other side of knives. I got new rolls to replace them but the timing was worse than the original ones. Wound up taking out the rear knife bolts and welding the knives on. That worked fine for the rest of the season. The only thing I can think of is the gearbox has jumped a tooth but it's running flawlessly otherwise. Anyone had this happen on these heads ??

Haven't had that trouble with ours, but it's a later head with the upgraded bolts already. Early heads only used grade 5 and would snap regularly, there was an update and running change to correct that issue with grade 8 and correct torque. Sounds like something else got tweaked/bent when it came off.

Thank you for the reply. We have only run this head for 1 season. I have some friends that bought this head very slightly used and they ran it for 3 yrs and upgraded to an 2208. We purchased it from them, but don't know any history on it before they got it other than it came from out of state. What kind of updates were done to them to help other than a grade 8 bolt to hold all of the stalk rolls on ? Before this head, we have been accustomed to the 800 and 1000 series heads. I really like the job it does compared to the other models we've had.

We went thru a couple 963s and 1063s over the years. This head is all NH but with red paint instead of yellow. The 3000 series went back to being made by CIH and are very similar made to a 1000 series. The bolt update was one of the biggest changes, I would have to see if I still have info on some of the changes. I have been told when you replace the knives on these to also replace the nose roll cone at the same time. I just replaced all the sprockets and chains last year but have not changed out the knives yet, they are sitting here in the boxes still. I would suggest getting the operators manual as several aspects have required torque amounts that are critical to have longevity, avoid problems and different lube spots that need attention. The slip clutches underneath have grease zerks that you have to remove several cover plates to get at and to even see them, ours still had red paint on the zerk heads so I don't the PO new about them. Another big thing is checking/maintaining the row gearbox grease levels. Ours was a one owner low acre head the neighbor bought new in '04/05. The first thing I did was install the stainless steel cover plates on the poly, highly recommend if yours doesn't have them as the ears dropping tend to be hard on the poly over time and acres and I added the weight bracket and 400lbs suitcase weights to the back of the combine like the book recommended as well. I have been happy with ours, this will be the 4 or 5th season for it, but we had good luck with the 9/1000 series we had too.

According to the serial number, this one is best we can tell an '08 year model. It hadn't picked 1500 acres worth since new best we can figure, and it shows it. The grease in the gearboxes was an improvement for us. With all of the morningglories we have it kept the seals constantly cut out on the 864 and 1054 heads. I'll have to look into the sheet metal protectors.