5020 4wd to 2wd conversion?
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=174504
Printed Date: 26 Oct 2025 at 5:04pm
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Topic: 5020 4wd to 2wd conversion?
Posted By: Louisdove
Subject: 5020 4wd to 2wd conversion?
Date Posted: 18 Sep 2020 at 3:42pm
Well, I finally broke something on my 4wd 5020 that’s expensive and/or hard to find. Plowing a field last weekend my right front caught a couple of times instead of spinning free. I nursed it back to the barn to diagnose and it’s not pretty.
The inside u-joint deteriorated, taking the coupler/carden(?) joint with it. The large bearing between the two housings came apart in the process, and some metal got down into the gear area and broke a tooth off of the larger of the drive gears at the hub as well.
Parts are expensive, if I can find them. The coupler and larger gear I am having zero luck with. I’ve called a couple people in Michigan with salvage tractors in hope of swapping the whole assembly but no one has 4wd parts lying around. Has anyone tried making a 4wd a 2wd with any luck? I feel if I replace the best songs around the large gear and remove the smaller gear and U-joints I would have a functional 2wd tractor instead of a non-functional 4wd. Thoughts?
If anyone has a lead on a right hub/axle assembly in or around Michigan I would appreciate that as well. Or a lead on where to get the coupler and u-joints. It’s a 1984.
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Replies:
Posted By: Gary Burnett
Date Posted: 18 Sep 2020 at 6:51pm
I bought a Massey Ferguson 220 4WD.same tractor as an AC 5030 in about the same breakage condition as your 5020.I took the 2WD front end off a parts 5020 I have and put them on the MF 220.Pretty simple switch just left the 4WD gearbox in place.
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Posted By: TramwayGuy
Date Posted: 18 Sep 2020 at 6:56pm
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Interesting that the Allis 5030 was never offered in 4WD, but the same tractor in MF was.
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Posted By: DougG
Date Posted: 18 Sep 2020 at 7:21pm
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Pretty sure they were,,, but I think I'm wrong could have swore I seen one at auction a few weeks ago
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