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8820

W

wide axle

Member
If I take out the filler plates on the cylinder will that help to
keep dust from collecting and causing an unbalanced cylinder? Are
there any negatives? I have the feeder house off and want to
remove them while it is off.
 
Well I disagree with removing them. IF your not doing much corn and do not use any GMO corn then MAYBE you will be OK without them. I have had many guys take them out to only have to fight them back in through the rock trap when they get a hard shelling corn and are leaving half of it on the cob. I have rarely have had an issue with the dust causing any issues. Most combines around here never get wet either. They are put inside just about nightly and especially before any rains.

Also it makes a difference on how full you can keep the cylinder. Your running a JD 8820 if you running an 8 row in fairly good corn you will be able to keep the cylinder full. If your running a six row then your more likely to have troubles.

Your call. JD said to run them and most guys here in heavy corn run them. It seems the fellow that say to take them out are more in small grain areas.
 
Just climbed off an 8820 that has not had the filler plates out in over three years....no problems
 
I run 95% beans, very little corn. Take them out? The cylinder gets unbalanced when the machine is turned off like for unloading. I very seldom turn it off for this reason. I am assuming that when the cylinder stops then the dust falls to one side and causes the imbalance. Sounds like I should take them out.????
 
How fast are you running your cylinder? An unbalance usually doesn't show up until you run the cylinder close to small grain speed (upwards of 900 rpm). You shouldn't have to run the cylinder that fast for beans. You may have other problems beside a "dirt imbalance". Like JD, I would leave the plates in. Odds are someone left the combine out in the rain sometime and what dust was in the cylinder (that would normally just fall out) got hardened and stuck and now you have your problem. Get out your air hose, get dirty, and get the hard chunks out. Look for other problems while you are there. Mike
 
Sounds logical but not the case here. I am in there now and it is all loose dust. When you stop the machine the dust falls from the top and gathers on the bottom of the cylinder at that time. Then when the machine is engaged the dust collected on one side of the cylinder causes an imbalance. If the plates are removed then there is less area for the dust to collect I figure. When I blow it out all is well. That is why I know it is a "gathering of the dust problem". Pretty well convinced that the plates should be removed. My question is why would I not want to since I mostly run beans. Would you agree after I have explained it more? I really don't know the purpose of them being there. Thanks...
 
As far as "getting dirty" I just changed the concave, replaced the upper shaft of the feeder house and r&r the variable speed belt and positorc cylinder. II pretty much know what dirty is.
 
What I am saying is that even if the dust causes an imbalance you hardly ever feel it until the cylinder rpm's get well above where you would run it for beans. Even running in oats you hardly ever feel any vibration (somewhere around 750-800 rpm). Only when you go to wheat (1000+) will you feel vibration, normally. I'm wondering if someone didn't install a balanced set of cylinder bars properly sometime or there is some other kind of inherent imbalance in your cylinder and that is causing your vibration. Mike
 
A good way to check for any inherent imbalance is to get the cylinder area clean and then unhook the drive belt to the cylinder, letting it "free wheel". The cylinder should not move. If it does, there is your problem. If it were my combine I would do this before removing the filler plates. Mike
 
Cousins 6620 never did that, the 9400 would shake your teeth out when bean dust dropped. It would usually clear up after 1/2 round. We let the machine run while unloading. Always bean dust corn dust never bothered it.
 
I have heard of guys putting golf balls (about a dozen) in the cylinder to help knock the dust off of the bars. Evidently they are heavy enough to stay in the cylinder. Not sure about putting golf balls into an expensive combine though.
 
Yea this is how mine is. Run 200 feet and it clears up. Even get it at 400 or so rpm when the dust drops. No imbalance or shaking except when you stop to unload and restart. I just don't turn it off. Will take plates out tomorrow. Thanks for the input but someone tell me what the advantage is to having them please.
 
i have had 7700's for thirty years and have never owned a set of filler plates. I have no idea why you would need them. I combine wheat oats soybeans corn and clover seed.
 
Well they keep grain from passing through the center of cylinder and not being thrashed. They also make the mass more so the cylinder flywheel effect is greater. They also support the cylinder bars and separator plates thus making the cylinder stronger. The dust your talking about would weight hardly anything at all. If your worried about the dust that bad all you have to do is engage the cylinder slowly and the dust will fall out before the cylinder comes up to speed.

If you take them out just be careful when running a slug through as you can plug the cylinder harder as the slug will wrap around the bar and wedge in tighter.
 
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