Farm Equipment - Rearend Knocking

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Rearend Knocking

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=172163
Printed Date: 29 Nov 2025 at 12:06pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Rearend Knocking

Posted By: PDehring
Subject: Rearend Knocking
Date Posted: 19 Jun 2020 at 3:26pm

Anyone experienced a knock in the rear end of a 210/220? It sounds like its coming from the left (drivers) side. I've noticed it after turning but it'll come and go. I was pulled a disk in 5th and it was pretty constant then. Sounded like 1 knock per revolution of the axle.

I've tried dragging the brake and that doesn't seem to change anything so I don't think it has anything to do with the brake but I haven't popped the cover yet.

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1937 M Crawler, 1963 D21, 1964 D21, 1965 D12 SIII, 1970 220, 1976 185

Replies:

Posted By: DrAllis
Date Posted: 19 Jun 2020 at 5:02pm

A "knock" for every revolution of the rear wheel could be a loose wheel on the spin-out rails or clamps on non-spin out type. Never seen a 210 or 220 with final drive issues.

Posted By: DougG
Date Posted: 19 Jun 2020 at 6:01pm

Ive had wheel weights come loose and clunk like that - check everything thats bolted on or like Dr says the rails etc,

Posted By: PDehring
Date Posted: 19 Jun 2020 at 7:28pm

Thanks guys, I'll check those out. The fact that its not always present is what is throwing me. I was hoping it wasn't a bearing or something like that.

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1937 M Crawler, 1963 D21, 1964 D21, 1965 D12 SIII, 1970 220, 1976 185