Combines Walker loss On 9000 and 9010 Combines

JoJoMac

Guest
GR, Instead of the blanket term walker losses, let's call them excessive walker losses. The Deere performance enhancments work well, but none of them adress this situation. I can not speculate as to why Deere builds rotary combines. The problem is not with the walkers, or the beater grate. It is in the concave. let's go through it from front to back. 1.Cylinder bars must be in good shape-more than .25 inches tall. 2.Same for the concave. There's a lot of 9000 series combines with broken front bushings, this doesn't cause the whole problem, but certainly adds to it. If they are broken the concave will be impossible to adjust. 3.This is the key. The concave must be level and proportioned with at least a .125 difference from front to back. WhyIJ because as the crop mat travels over the concave it gets thinner from front to back. If the rear of the concave is lower than the front the combine will have walker losses. An eighth of an inch isn't much, but it makes a world of difference here. 4.Adjusting the beater grate to the upper position will not help. If the cylinder and concave wouldn't thresh, the beater sure won't. What it will do is cause backfeeding, further reducing the efficiency of the combine, and probably causing more loss. 5.The curtain on the beater grate requires that the beater grate be operated in the upper posistion. 6.Just take the grate out and replace it with a finger grate from a spike tooth concave. Bolts right in. 7.Go drink a cold beer. After that you'll need something to improve your disposistion. 8.Corn inserts should be out unless you're in wet corn. Same with the filler plates. This is a dirty, nasty, itchy job. I only know that this works in corn and soybeans. We grow little wheat here, I can not say I have any experience with it. Joe
 

Neal

Guest
Great information Joe. I'm new to running a walker machine and any information in enhancing the performance of this machine is a help. One question; is there a reason the filler plates need to be removed other than preventing the cylinder from becoming unbalanced because of dust buildup. I have other questions but don't want to create to much dialogue here.
 

JoJoMac

Guest
Neal, Filler plates keep corn from getting between the cyl bars and getting away. They serve no purpose in other crops. I don't think they are neccesary in dry corn, but in some varieties that are hard to thresh, maybe. In soybeans, especially green stems, they'll make the cyl. less agressive and cause backfeeding. The reason they get left in all the time is because they 'aint much fun to mess with. If you take them out, put the bolts back in the holes to retain the j-nuts. Happy Cutting, Joe
 

Green_Reaper

Guest
JoJo Thanks for your helpful reply.I think one enhancement
 
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