front feed chain, N6 Gleaner
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=156327
Printed Date: 18 Jun 2025 at 8:15am
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Topic: front feed chain, N6 Gleaner
Posted By: darrel in ND
Subject: front feed chain, N6 Gleaner
Date Posted: 11 Dec 2018 at 7:07pm
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The front feed chain in my N6 sort of fell into a state of dis-repair. I was looking for part numbers for it on agcopartsbooks.com, and got a little confused. First listing is for a complete assembly, and is listed as being A557 chain. Then below that, is listings for side chains and center chain in both A557 and CA550. What's up with the two different chain numbers..? Anyone know? Thanks, darrel
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Replies:
Posted By: Orange Blood
Date Posted: 11 Dec 2018 at 7:13pm
Center chain will have tabs on both sides, side chain will only have tabs on one side. Otherwise probably the exact same chain types and dimensions.
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Still in use:
HD7 WC C CA WD 2-WD45 WD45LP WD45D D14 3-D17 D17LP 2-D19D D19LP 190XTD 190XTLP 720 D21 220 7020 7030 7040 7045 3-7060
Projects: 3-U UC 2-G 2-B 2-C CA 7-WC RC WDLP WF D14 D21 210 7045 N7
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Posted By: Lonn
Date Posted: 11 Dec 2018 at 8:20pm
I'd get the 557 complete assembly, slats and all. The 550 chain was the early lighter style and you could buy the separate chains lengths without the slates. Slates? I mean slates. What's the matter with me, I mean slats!
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Wink
I am a Russian Bot
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Posted By: Unit3
Date Posted: 11 Dec 2018 at 11:02pm
Later N's had a longer lower feeder house and need a longer chain.
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2-8070FWA PS/8050PS/7080/7045PS/200/D15-II/2-WD45/WD/3-WC/UC/C
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Posted By: DrAllis
Date Posted: 12 Dec 2018 at 3:52pm
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CA550 chain was adequate for those older combines for the most part. When you go to CA557 chain, you are adding a lot of extra WEIGHT because the chain weighs more. This over time can break the drive shafts and anything related to the feeding system. That's why over the years the hex shafts and drum bearings, etc have been made beefier....to handle that extra chain weight and pressure from operators driving faster.
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Posted By: Lonn
Date Posted: 13 Dec 2018 at 7:21am
Boy Doc, Gleaner must of let the bean counters affect the build quite a bit. I wouldn't have guessed that the weight difference between the chains would make much difference. Of course then I think of how light the CaseIH rotaries were in the feeder house so............
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Wink
I am a Russian Bot
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Posted By: DrAllis
Date Posted: 13 Dec 2018 at 7:27am
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I never had any issues with CA550 chain in an N-series BUT, I didn't have any corn heads larger than 6 rows either. All my N-6's and many N-5's would run full tilt in second gear all day long in corn. The biggest downside to the CA550 chain to me was the 3/8" bolts holding the slats. The change to CA557 chain went to 1/2" bolts which was probably a good thing. My Brothers R50 still has the old CA550 chain with a 6-30 head and we never have had any chain issues in a dozen years or more of harvesting.
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