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MacDon on a 590R

4299 Views 16 Replies 7 Participants Last post by  SouthernSK
Has anyone ever removed some flighting and added fingers to the feeder drum
to help the feederhouse run full and perhaps feed the cylinder more evenly and not crowd the center?
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I have read of this on here. Also a Claas employee mentioned running the side belts slower to not crowd the center. (my fd70 side belts running fast still don't seem fast enough. By the time the material gets close to the center, the reel is hitting it because it is so deep.)

I did add maybe two fingers per side from a factory FD70 drum but didn't modify the flighting. When I shut the feeder off under load the best I can, the feederhouse appears to be running level side to side through the right inspection hole.
So, I was about to get the 740tt ready for wheat today. I was looking up the rock trap and IIRC, at about 700 engine hours, the APS "caps" are getting rounded, but not on the side of the APS, only the middle ones. I do not believe the returns are the primary cause of the cap wear, as it should do a decent job of spreading the material by the return auger design.

It appears I need to change something to make the header feed more evenly. I have noticed much more impeller wear in the middle as compared to the sides, as well as build-up of material above the impeller. On the other hand, at times I do a "power shut-down" and the chaffer load is spread very evenly side to side, a nice benefit to the Claas design IMO.

I guess I have a few options to modify the 40' FD70 to feed more evenly.

add more fingers to the side of the auger
remove some of the middle fingers
cut a few inches off the flighting in the middle, or cut it down to the tube
a combination of the above options

This is an issue a rotor machine really wouldn't be dealing with. Having said that, this should be fixable and doing so at the header will only help the combine work even better.
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I traded four random middle fingers and put two of them on each side of the feed auger. I put them inside the flighting where the paint is worn off from crop flow. I didn't think they would do much good hidden behind flighting. The next thing to do would be remove some inner flighting if this doesnt do the trick.
I never have feeder chain trouble.

Crops are doing great, blessed with rain lately, although it didn't help the wheat as it received too much rain as it ripened. Wheat seems to be in the 75 bpa range. Could have been better with less rain. It is lodges as I slightly over fertilized it in its early growing stage. I am doing the Phil Needham intensive management style and the yields are better.
We are done with wheat. It is very hard to do a kill stall to see the actual crop mat as if it were in operation. Going by the APS wear, and actually studying the auger flighting verse the narrow body feederhouse, I think I will narrow up the flighting before soybean harvest. The APS and impeller show more wear in the middle, so I suspect the FD70 is not feeding properly.
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