n5 cylinder clearance issue
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=112232
Printed Date: 14 Sep 2025 at 1:47pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: n5 cylinder clearance issue
Posted By: aaronac1
Subject: n5 cylinder clearance issue
Date Posted: 20 Sep 2015 at 7:24pm
Im having a hard time getting my clearance closed up to cut beans. This is my second season running this combine. It acts like its stuck. I had a little trouble last year getting it closed up but I finally did. Has anyone run into this before and what else can I do. Beans should be ready this weekend
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Wd-45 D-17s4 170 185 190xt 7045 8070
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Replies:
Posted By: Amos
Date Posted: 20 Sep 2015 at 8:05pm
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Had a similar problem with my R52. One of the pins was seized in the mechanism at the top of the concave area. Once I figured that out and freed it up was no problem to adjust it completely closed. Not sure how similar the N5 is to a 52
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Posted By: aaronac1
Date Posted: 20 Sep 2015 at 8:35pm
What it does move you have to crank harder than heck
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Wd-45 D-17s4 170 185 190xt 7045 8070
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Posted By: DrAllis
Date Posted: 20 Sep 2015 at 8:39pm
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You can do beans at 1/2" clearance or a little more. Shift it into HIGH gear at 650 RPM minimum and go combine. It will loosen up some as you use it. They do move hard sometimes.
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Posted By: aaronac1
Date Posted: 20 Sep 2015 at 9:06pm
I cant get it under 1" right now.im not a small man by any means and I have a hard time moving it
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Wd-45 D-17s4 170 185 190xt 7045 8070
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Posted By: DrAllis
Date Posted: 20 Sep 2015 at 9:59pm
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You shouldn't have been over 3/4" for corn anyway. I'll bet the rock door is jammed against the concave from opening it too far. Not there, so it's just a guess.
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Posted By: Gregor
Date Posted: 26 Sep 2015 at 1:20am
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Once had one that wouldn't move either and broke the adjusting arm where it goes thru the side of the combine. It was a new to me N5 and first time trying to adjust it. ended up missing some parts that moves the concave on the left side of the concave. Might try a prybar in their and see if it moves. My guess is someone worked on mine before we bought it and didn't put all the parts back in there.
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Posted By: Unit3
Date Posted: 26 Sep 2015 at 12:14pm
7/8 jam nut on the bounce bolts on each end of the rock door. The bounce bolts have a square 1/2 head. Loosen the bolts then set your clearance. Retighten the bolts. Hope this helps. I reset them for corn and for beans. 5/8 - 3/4 for corn at 350 rpm low range and 1/2 for beans at 700 rpm high range.
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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: aaronac1
Date Posted: 27 Sep 2015 at 7:30pm
Last year was my first season running the in 5 and it was hard to adjust then but I did get it set. So do I need to open the rock door to see whats going on?
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Wd-45 D-17s4 170 185 190xt 7045 8070
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