Early 80s m-2 questions
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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=140428
Printed Date: 24 Aug 2025 at 1:10pm
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Topic: Early 80s m-2 questions
Posted By: Nickelplate
Subject: Early 80s m-2 questions
Date Posted: 15 Jul 2017 at 7:26am
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Going to look at a combine soon. I know nothing of this vintage other than normal wear items. Is there anything I should look at specifically on this model? Reliability of these machines? Ect. Would be helpful thanks in advance.
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Replies:
Posted By: MACK
Date Posted: 16 Jul 2017 at 7:30am
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A lot of paces to check. Cylinder bars, concave, all augers, all sprockets, chains, shoe, walkers, front beater, belts, and over all condition of machine. MACK
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Posted By: wekracer
Date Posted: 16 Jul 2017 at 7:00pm
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I also like to check the tattle tail monitors. Kick it in gear and check to see that they all work or most of them. If they took the time to keep the little stuff working then they usually took care of the big stuff too.
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Posted By: Gregor
Date Posted: 16 Jul 2017 at 7:28pm
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My first combine was a M2. Ran Dad's G for many years and what an upgrade that was. Very good machine. Only problem I had was my chopper belt. Newer ones had a 2 piece belt that was much better. Mine was a little older and I had a really long belt that was a single belt. It would flop around and flip on the pulley. Flipped the chopper blades and that helped. I added a few pulleys to guide the belt and keep it from flopping and that pretty much solved my problem. Otherwise, seemed like after a good look over every year before harvest, I really never broke down. Side hill blower option would be nice in the hills if that actually helped, I don't know. Probably could get one pretty reasonable out of a salvage yard.
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Posted By: GM Guy
Date Posted: 21 Jul 2017 at 11:38pm
If its a 1979 or newer (keep in mind there is no such thing as a 1980 M2, just MH2, they killed it for 1980, brought it back in 81.)
check out the wide range cylinder drive. what commonly happens is no one greases the torque sensing sheave on the mainshaft, it binds, operator tries to adjust cylinder speed, belt gets super tight, rips idler bracket off the side of the machine and sometimes bends the pivot shaft.
check the shoe for cracks, people neglect the bushings and chain tension, and either the shaker shaft twists or the bad bushings allow the machine to hammer, and destruction ensues.
Check grain bin floor, condition of inner and outer pieces of the unloader joint.
make sure the grain pan is OK.
Otherwise, should be able to do simple inspection on wear itemsthat should be obvious, scalloped augers, wore cylinder bar rasps, roller chain climbing sprockets, bad belts, 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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