9500 not cleaning beans

4520BW · Oct 10, 2016

Started running beans this weekend and can not get them as clean as I would like. The beans were real tall and a lot of them are down now. I tried adjusting and can never get the chaff out, and have never had this trouble before. Any one else having this problem or know of a trick to cleaning them up?

Wilton · Oct 10, 2016

I had the same problem. I could make it worse but making it better seemed difficult. Put the extension down to 6. Close the sieve a little and increased the fan speed 1250. When I switched varieties the problem went away.

Mike Aylward · Oct 10, 2016

Most folks do not run enough air for the cleaning shoe to operate like it should. I own a 9500 and in beans never have the fan speed below 1400 and most of the time run it between 1450-1480. Set the precleaner almost closed, not completely like the book says. Set the chaffer to where your index finger can be inserted between the fingers. Set the rear a little tighter than the front. Set the sieve so beans will just fall through then open it very slightly more. This should get you a good sample and is a good starting place. And no, you will not put beans over with this amount of air. You are much more likely to lose beans with less air pressure. You want the chaff to float off the chaffer, not be carried off. The chaff should never touch the chaffer. Mike

JD Seller · Oct 10, 2016

I will second your running the fan speed too low. I rarely run them under 1300-1400. You need to float the chaff out of the beans.

4520BW · Oct 10, 2016

I speed the fan up but would only go up to about 1300. On my 7720 I added some shims to the bearing to get more out of it but sure if it will work on the 9500. Thinking of putting head on 7720 and trying it.

JD Seller · Oct 10, 2016

IF you have the chaffer open too far it will allow too much air to go through the entire chaffer and let the chaff fall through. Try closing the chaffer more.

Mike Aylward · Oct 11, 2016

This will only happen if the fan speed is
too slow to begin with. With a larger
opening more air can be used in heavy chaff
conditions with less grain loss and a better
sample. A chaffer set to tight pressurizes
the air coming out of the openings, much
like your thumb on a garden hose. Grain
won't fall through as easily, either. You
want air volume, not pressure. Mike

IowaJohn · Oct 11, 2016

For me it's harder to get beans clean when I first start harvest. More green pods slip thru into the clean beans and a lot more broken stems for trying to thresh all the beans out. After a couple of rains like what I'm into now it's a lot easier, the stems are drier, there are not many green pods so on a nice warm windy day like today I can slow the cylinder down open up the concave and get the stems thru whole and only get clean beans in the tank.

9500 not cleaning beans

4520BW

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Wilton

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Mike Aylward

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JD Seller

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4520BW

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JD Seller

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Mike Aylward

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IowaJohn

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