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Combines & Harvesters Discussion Forum

Quick attach drive couplers too short

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andy r

09-24-2012 19:38:50

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I bought a JD 216 platform which has the short drive shafts on the left and right side supported by a bearing near the end of each. I assume it was set up for a hillside combine. The prior owner sent 2 short shafts he used that go between the two platform shafts and the two combine shafts. One has a slip clutch (sickle side). Both have the sprockets you wrap the roller chain over to couple them up. Connecting the platform shaft and these two short shafts in the middle are 4 or 5 inch hex couplers. Anyway the short shafts are too short when trying to attach it to my JD 4420. He had it on a JD 6620. Is a JD 6620 wider where the drive shafts come out of the feederhouse?? Eventually this is going on a JD 6620, but was suprised when it didn't work on my JD 4420. I thought all of the combines and heads were universal of that vintage. Thank you.

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Paul swPa

09-27-2012 16:23:41

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 Re: Quick attach drive couplers too short in reply to andy r, 09-24-2012 19:38:50  

Andy, I finnally remembered to take the camera with me up to the combine and took some pictures of how my 216 flex drives off my 4420. Hope they are some help, if not too late.
Photo tags don't look like they are going to appear. First three are on the left side drive, last three are on the right side.

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Mike neia

09-24-2012 20:25:11

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 Re: Quick attach drive couplers too short in reply to andy r, 09-24-2012 19:38:50  
The couplers slide on the feeder house. The width is the same on 4420 and 6620. Have a 213 that has been 4400, 4420, 6620, and 9400 without any modification to the drive shafts.

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Andy r

09-24-2012 20:48:08

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 Re: Quick attach drive couplers too short in reply to Mike neia, 09-24-2012 20:25:11  
Yep, the couplers slide outward, but won't come together enough to put the roller chain on the two sprockets. Inorder for the sprockets to come together the hex couplers come off of the outer short shafts. Seems like everything is just too short - both sides.

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