N7 problem
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=133127
Printed Date: 08 Jun 2025 at 10:20pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: N7 problem
Posted By: Big Orange
Subject: N7 problem
Date Posted: 28 Dec 2016 at 7:39am
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My neighbors N7, grinds corn & splits beans bad. We have adjusted everything we can think of to fix the problem, but no change, what are we missing? HELP PLEASE
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Replies:
Posted By: DrAllis
Date Posted: 28 Dec 2016 at 12:19pm
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Could be multiple things on an old "P-1" processor. Reverse cylinder bars could be removed.......worn helical bars (doesn't take much wear to cause issues).....worn out cylinder bars on the thresher side.....worn or not level concave.......plugged concave........cyl speed in corn shouldn't be over 320 RPM.....maybe 600 in beans.......discharge paddles that are bent back instead of forward........accelerator rolls that are no timed properly ??
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Posted By: Unit3
Date Posted: 28 Dec 2016 at 1:48pm
Is the concave set down to tight?
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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: GM Guy
Date Posted: 28 Dec 2016 at 1:55pm
what do you have for accelerator roll drive? the early ones had roller chain and could be out of time, newer had gears, but they are adjustable so it could still be out of time.
Are you taking the cage covers off for corn?
What kind of rotor speed? Like said above, inspect bars, discharge paddles, concave, etc.
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Gleaner: the properly engineered and built combine.
If you need parts for your Gleaner, we are parting out A's through L2's, so we may be able to help.
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Posted By: MACK
Date Posted: 28 Dec 2016 at 9:36pm
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Two speed gear box needs to be in low. MACK
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