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Hi,

I am wanting advice on wether to use the the concave cover plates (green metal straps which wrap around the concave cage) on JD 9670. My dealer said they weren't necessary due to being in high rainfall area where we can usually keep the header full in 3-5t crops, however some other guys say you need them. Harvesting mostly wheat and barley.

If recommended, whereabouts do you put them?

Cheers
 

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Use them often in wheat in high yield situations. Front two sections of front concave, middle section of second concave under tailings input.
 

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hi ,I don't use any plates on my 9660/9670 here in south Africa and we had high yield three years in a row. some put the med concave first and the other two small wired concaves.it helps with the threshing.
 

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I'd keep 3 on hand just in case. They aren't that expensive and they are easy to install, particularly compared to changing concaves. To install by yourself, hook the left side in place, snag the u-bolt on the divider between the augers, go around to the right side, lift and latch.
 

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Good luck with the inserts, our wheat this year has been hard to thresh.
Lots of whitecaps, and over 4% dock at the elevator.

Then we put in inserts in the small wire concaves. Put them in 1 and 2, and
then in #5 under the return. The results were much the same, did not help
much at all, and the grain was dryer. New threshing elements, and great
concaves.

Good luck, mine was not.

What is the secret to grinding out the wheat with the Deere ?
 

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Our 7010/8120/8230 is always way worse than the Deere...
:confused:

K. I'm calling your bluff on this one! I'm pretty green, but these sweeping generalizations are borderline nuts. And like I used to tell the guys on the high school basketball team I used to coach, if you use the terms ALWAYS or NEVER you're trying too hard to convince yourself. :eek:
 

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I always run plates in slots 1, 4, and 5, then add another one or two as needed. First i will try in slot 2 then slot 6 or both depending on conditions. Also need interrupter bars in the first two concaves. Keep in mind this is in 30 to 60 bu wheat, not 100 to 160 as you are cutting.

I am going to make an assumption that you are running your concave very tight (less than 5) and rotor really high. I have found that most conditions I'm at 8 to 10 and around 800 to 850. Also run my lower sieve at 4. Although this year was tough conditions and the concave spent most of the time down around 5. Also seem to run my fan a lot higher than the recommended speeds.

We demo'ed a 9230 and I cant complain about the sample it produced. Very clean next to the 9770. I was around .75 dock and the red machine was down under .4 with most at .25. Very easy to set too.
 

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We use them in our 9670's in Western Australia on one particular wheat variety that is hard to thresh (Mace) don't need them for the other varieties. Put them in first 2 slots and then fifth (I think)
 
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