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Has anybody been doing this on flat ground? We have a 9750 with a hillco leveler that is continually breaking the bolt circle out. The first one that we found was 3 years ago in the middle of harvest, and just yesterday we found both of our inside duals were broken also. As these wheels have been breaking we have been going to heavier and heavier steel in the center and currently schwabs is putting in 3/4 inch flat iron. When we have these two fixed we will have replaced all of the front wheels and one of them will be the second time recentered!

I have a very strong feeling that the tremendous force of holding one of these machines on a sidehill is our problem. We farm a piece of ground that has 45-50% slopes and some of it can be soft causing the combine to slide. One of the reasons could be that the tires do not level with the machine as they used to in the past, instead they stay perpendicular to the ground.

Has anyone seen this in other cases whether it is flat ground or hillside farming? Or did we just recieve a bad set of wheels! TIA
 

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I work for a company that leases combines to farmers. We have a large fleet of 9770 and 9760 machines. You did not mention if your wheels are duals or singles. Our machines are equipped with duals but are not side hill machines. We have replaced the dual wheels on several machines this last fall due to the rims breaking as you described. It it fairly common and sadly we expect it. We always keep a half dozen rims on hand as most dealers do not have the dual rims.
 

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Duals are a ngihtmare on combines in general. We've been seeing a pretty large switch to guys running 30.5's/77x44's/or even trelleborg 900's. Duals just put to much stress on the axles, i've known several people who have snapped the outside duals off, especially when they get loaded down, and we're on 100% flat ground.
 

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So out of curiosity does loaded down mean with an extra hopper extension that gives it 450bus of corn plus a 12 row chopping head? We have run JD combines with duals with 8000lbs draper heads for 5 years and have never had a rim go out on us. We are not flat with lots of drainage ditches and small sharp hills.
 

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Duals are a nightmare? Can't even count the number of 30.5's we have replaced over the years due to sidewall/bead failure. Bought our first combine with duals last year, will be replacing all of our combines with ones with duals. No tire or wheel problems and sure are easier to haul. Could be lug bolts are not being torqued properly if you keep breaking wheels. Like jdmanitoba we cover some rough ground occasionally and run 15 row 20" corn headers that are heavy as h*ll.
 
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