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JD 7000 center transmission

B

Beverly Scott

New User
I have an older model 6 row 7000 and the metal/slot that contains a tension roller/bolt for the driver chain in the center transmission is worn and metal thinner so while planting in corn residue corn stalks will loosen the roller and the driver chain will slip off. I saw a 7000 at a sale that looked like this tension roller was mounted on better so it would prevent that loosening and chain knocking out.
Did John Deere change the design of that mounting of the roller on the driver chain in later models? Thanks.
 
The drive stayed the same for all 7000 series production but was drastically changed for the 7200/ 1750 planters. I just traded my 7000 for a 1750 and am looking forward to having the newer transmission plus the main clutch is easier to service or repair.
 
I hear that it is not difficult to fit a 7200 type onto a 7000 planter and make a longer lasting setup. Never done it so not sure what all is involved.....

Paul
 
Just hang a loop of chain under the planter right at the front off the fertilizer tool bar. Let it hang down to just clear the ground when the planter is in the down position. They will break any corn stalks forward so they do not spear the drive chains in the seed transmission. BE glad the chain tightener is coming loose. IF it did not you very well can strip the drive dogs out of the drive clutch.

To fix the tightener slipping in the slot/ Use a longer bolt and put a fender washer on each side of the frame slot. Then use a flange nut on the bolt. I have done this to hundreds of them. In normal use they will not cause any issues.

You need to keep the corn stalks out of the drive chains or they will break some serious things. It happens when you are going the opposite way from the direction the combine did. The stalks are just like spears and go right up into the drive chains. That is what the hanging chain stops. It bends the stalks forward and they then just slide under the planter doing zero damage.
 
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