Farm Equipment - D12 with throw out noise

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D12 with throw out noise

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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=57270
Printed Date: 06 Sep 2025 at 5:20am
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Topic: D12 with throw out noise

Posted By: krieg1952
Subject: D12 with throw out noise
Date Posted: 22 Sep 2012 at 4:11pm

I have a 1959 D12 that makes a lot of noise at the throw out bearing. Is the throw out bearing servicable or does it have to be replaced? Thanks in advance.

Replies:

Posted By: JoeO(CMO)
Date Posted: 22 Sep 2012 at 4:13pm

Did you try to grease it?

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Posted By: krieg1952
Date Posted: 22 Sep 2012 at 4:21pm

How do I get to it to grease it?

Posted By: Gary
Date Posted: 22 Sep 2012 at 4:55pm

Krieg

I checked in an Allis 'Operators Instructions Manual' for the early D-10 and D-12

and was suprised that there was no mention about lubricating the clutch release bearing.

Gary

Posted By: GregLawlerMinn
Date Posted: 22 Sep 2012 at 8:24pm

Most T/O nearings I have seen are sealed bearings (it is adjacent to the clutch/pressure plate and grease is not compatable with them); believe the D12 has a sealed T/O bearing.

Is the noise constant...or is it noticeable when you depress the clutch? A constant noise indictates a worn T/O bearing; noticeable only when the clutch is depressed indicates a dry or worn pilot bushing/bearing.

One needs to split the tractor to service the T/O bearing and/or pilot bushinf/bearing. Sometimes, one can re-grease a T/O bearing similar to regreasing wheel bearings; however, its probably best to replace the T/O bearing seeing as how much is involved to access it, and the cost of a new one is reasonable.

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What this country needs is more unemployed politicians-and lawyers.
Currently have: 1 D14 and a D15S2.
With new owners: 2Bs,9CAs,1WD,2 D12s,5D14s,3D15S2s, 2D17SIVs,D17D,1D19D;1 Unstyled WC

Posted By: TimNearFortWorth
Date Posted: 23 Sep 2012 at 8:30am

Worth noting on the newer units where a perceived throw-out bearing noise had us scratching our heads. Sounded like the throw-out bearing but all had been replaced with new. Turned out we needed to make a new bushing at the rear of the hollow quill shaft as the worn bushing noise travelled forward through the torque tube.

Drove us nuts on a late 1960 D12, equipped with live hydraulics and live PTO.

Posted By: Tracy Martin TN
Date Posted: 23 Sep 2012 at 10:01am

Aetna offered a greasible throwout bearing for the D series. Use common sense and grease sparingly. HTH Tracy Martin