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Statesville, NC | I'm not too familiar with John Deere corn heads, but they are plentiful and seem to be simple and reliable. I'm looking for something simple and reliable to adapt to my L3. The black head I've been running has done well, but I know it's a matter of time until I get into some major downtime during harvest. Are the JD heads much more reliable? What are the differences in the 40 and 90 series? What are common wear areas or problem areas to look for? |
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| Biggest difference is probably that 90 series had poly snouts, 40s were steel. Very very little difference between a late 40 and early 90 otherwise. They are both very reliable heads. |
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| I had a 643, now a 693. In my experience, they are both very good, reliable heads. If you get a 40, make sure it has the oil bath for the chain end drives. I think the tapered flute rolls seem to do better than the straight flute rolls... if you get one with straight flutes, cut 2 flutes off each roll, unless you don't want to go more than 4mph with head at full speed...other than that the biggest difference between a 40 and 90 is the poly. Except the newer 90's, they changed the header angle, and bevel gear in the gearbox for knife rolls.
Edited by 1985deere 7/14/2015 21:55
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| I run a JD 444 head on my JD 9500 combine for several years now and have yet to have any trouble. They are a good well built corn head, much better than the 438 (Orange style head) i ran on my Gleaner F3. |
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w/c Illinois | Take a small pry bar and wiggle the top sprocket on each gathering chain. The shaft in the sprocket turns in a bronze bushing and the bushing is lubed by a spring that screws grease up the shaft. The bushings need replaced over time, and it is not a quick fix. |
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JD 643 and 693 corn heads, what to look for; thinking of adapting to Gleaner L3
