JD Seller

andy r · Aug 18, 2015

I posted about this problem a couple weeks ago. On my JD 6620 the fingers are broken off that help move the grain from the concave augers to the chaffer. The metal plate under the wires is pretty well busted up as well. Spent the morning yesterday at a combine salvage yard which probably had 35 plus similar John Deere combines and most if not all had the same problem - busted up fingers. On some of the combines nearly all of the wires were broken off. If all of these combines had broken up fingers it makes me wonder if they are absolutely necessary???

Secondly, some of these combines did not have the steel plate. They just had the little fingers. Was the steel plate an add on for corn and soybeans so the crop was dropped a little farther back so the grain wouldn't go forward into the fan area????

Lastly, could I make a plate from mild steel and weld some 3/32" or 1/4" rods to it as a replacement???

Thank you.

JD Seller · Aug 18, 2015

I always called this part a finger grate. The part # is AH126337 $315.76 from JD. It keeps coarse material form falling directly into the clean grain cross auger. If your in real flat ground you may not have any trouble with out it. On my hills you will fill the clean grain system up with corn cobs if you do not have a good one installed. The reason you only finding broke one in the salvage yards is the finders fatigue with age/use and break. Most salvage yard combines of the JD 6620 age are pretty well worn clear out. I have quit even looking for used parts for the JD 20 series. They are just old enough that you usually find only junk/worn out parts.

As for the metal plate your talking about. They made a cover for the fingers. Some guys did not want anything to fall into the clean grain auger. So they blocked the fingers off.

As for making one. I guess you can but if you weld the rods to the plate the rods will break right at the welds after running for awhile. I would come close to sandwiching rods between two flat plates with clamp bolts.

I am assuming your talking about part #5 in the picture.

Bob · Aug 18, 2015

For what my opinion is worth, "back in the day" (on Masseys, anyhow) those assemblies were called "thistle screens" and served to float thistle "heads" and fuzz back a little ways from the front of the sieve, into the rising airstream that would hopefully toss them out the back, and allowing the clean wheat (or other crop) easy access to drop through to the front of the sieve.

If you are not harvesting crop with lots of weed load of that type, I doubt their absence will have ANY effect on the operation of the combine/saving of grain.

andy r · Aug 19, 2015

John Deere Seller ... when you say "course material will fall directly into the clean grain auger" are you meaning dump over the front of the chaffer when you are going down hill??????? Cobs, shelled corn, etc., would slide over the top of the chaffer and drop into the fan area??? How would course material get through a chaffer set at the proper opening???

I have owned the combine several years. It appears the previous owner had taken the cutting torch and cut the middle sections of the steel plate back about halfway to get the corn on the chaffer sooner. The left and right hand sections of the steel plate were not cut. I assume this strategy would increase the surface area of the cleaning section while attempting to keep shelled corn from the extreme sides. Thanks John Deere Seller for your knowledge. andy

jicaseman89 · Aug 19, 2015

just wondering if the finger thing would work in your combine from a 105 jd i read your post and went looked at mine seems to be in real good shape.
Loren

JD Seller · Aug 19, 2015

Andy when the chafer/sieve frame rocks back and the gap is wider at the front and your going down hill you can/will get trash/cobs that roll off the front into the clean grain auger. The material is bypassing the entire sieve/chaffer by going in front of it.

JD Seller - fingers broken off behind grain pan augers

andy r

Member

Well-known Member

Bob

Well-known Member

andy r

Member

jicaseman89

Member

JD Seller

Well-known Member

Similar threads