Farm Equipment - L3 Gleaner

L3 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=208664
Printed Date: 26 Oct 2025 at 3:43am
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Topic: L3 Gleaner

Posted By: SteveMaskey(MO)
Subject: L3 Gleaner
Date Posted: 25 Oct 2025 at 9:45am

What is the correct adjustment for the cylinder door? Mine will come open without tripping the latch. I have the little flat irons out as far as they will go and still won't hold. I guess build them up a little. I can't find them in the AGCO parts site

Replies:

Posted By: 8070nc
Date Posted: 25 Oct 2025 at 2:14pm

I got curious when i saw your post. I wondering if the pivot for the door itself is worn enough to allow it move over enough to slide off at the latch side when it gets pressure on it. Or the latch where it sits on the plates is worn off rounded. If you can post what you find ti fix it. It will be interesting to find out

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1984 80780
1957 D14
DES 300 with 25000 engine
616 tractor

Posted By: Northern Hoser
Date Posted: 25 Oct 2025 at 5:20pm

Both mine have had the plates for there the pins sit welded up by either me or previous owners. They just seem to wear out over time with all the vibrations going through that area, and also the pivot pin for the door itself. Once you get that sorted out so that there's enough meat there to hold the pins, those plates are shimmed to get the door tight to the base of the concave.

Getting that just right, I don't know the text book answer, maybe someone else does but I have mine set so it takes a bit of effort to get closed; to compress the cam spring to over center it, but not so much you have to get on your back and use your legs lol.

If its that tight I'd suggest loosening it off.

Too loose it'll move around a bit too much and wear out those plates. Too tight and she might not open up when it needs too.

With mine set so that a good shove will cam over and set the pins, a large wad will open the door but stay shut for normal operations.

Matt.

Posted By: DrAllis
Date Posted: 25 Oct 2025 at 7:02pm

I'm pretty sure the Owners manual has 1 or 2 pages of pictures and adjustment information. Worn parts have to be addressed for sure.

Posted By: Lynn Marshall
Date Posted: 25 Oct 2025 at 8:43pm

The striker plates and shims for the rock door latch are bolted to the front side of the concave assembly. The concave is obviously directly under the cylinder. The concave also sits on top of a frame work that has the threasher raddle running through it. The threasher raddle takes the grain that has passed through the concave and sends it on to the separator raddle. Over time and the constant pressure of material pushing down on the concave, the entire assembly can move down and get the rock door adjustment all out of wack. Look at the assembly from a side view, especially the front boot where the threasher raddle drive shaft is,and see if the hardware is broken, loose, or bent. That whole assembly should be up and tight against the bottom of the throat.