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CA Hand Clutch

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=208811
Printed Date: 22 Mar 2026 at 3:44am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com


Topic: CA Hand Clutch
Posted By: Les Kerf
Subject: CA Hand Clutch
Date Posted: 05 Nov 2025 at 7:44pm
Pulled the hand clutch from the CA today, it is well lubricated Tongue





Replies:
Posted By: CA13414
Date Posted: 06 Nov 2025 at 7:53pm
That is indeed well lubricated!!!!

A mess of leaking oil and years of organic material. Our was full of corn shucks and grime was packed in like a bird nest. All the oil and worn down springs and clutch plate = slipping.

At least yours was one unit. Some or our trouble was because the hand clutch was not bolted to the brake unit and loose (all 6 bolts were sheered off). Thus, was the source of noise and failure to disengage and re-engage.

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Helping the aged survive and thrive! 1953 CA


Posted By: Les Kerf
Date Posted: 07 Nov 2025 at 7:11am
Originally posted by CA13414 CA13414 wrote:

That is indeed well lubricated!!!!

A mess of leaking oil and years of organic material. Our was full of corn shucks and grime was packed in like a bird nest. All the oil and worn down springs and clutch plate = slipping.

At least yours was one unit. Some or our trouble was because the hand clutch was not bolted to the brake unit and loose (all 6 bolts were sheered off). Thus, was the source of noise and failure to disengage and re-engage.

The surprising thing is that the clutch wasn't slipping and seemed to function correctly in all respects. Granted, we never worked it very hard either; this is the tractor that I purchased earlier this year for cheap and have been tinkering on ever since.

The main clutch is worn out so we have it split and both final drives are off; an unrelated semi-emergency developed with my Son-in-law's truck that requires shop space so the CA is now shoved to the side for the duration.


Posted By: Chaimers
Date Posted: 17 Nov 2025 at 6:10pm
If you have it tore down that far did you give it any thought about putting the hand clutch on the left side? I feel it should have been over there from factory. JMO


Posted By: Les Kerf
Date Posted: 17 Nov 2025 at 7:05pm
Originally posted by Chaimers Chaimers wrote:

If you have it tore down that far did you give it any thought about putting the hand clutch on the left side? I feel it should have been over there from factory. JMO

Yup, as a matter of fact, Grandson and I have already made that decision in order to be able to run the hydraulics at the same time as releasing the hand clutch. Not quite sure what we will use to steer with, knees, perhaps? Tongue


Posted By: rilenz
Date Posted: 18 Nov 2025 at 5:27am
I always wanted to move the clutch to the other side. But didn't think it was possible . Is it a real problem or more or less switching axle and clutch parts side to side?


Posted By: Les Kerf
Date Posted: 18 Nov 2025 at 5:43am
Originally posted by rilenz rilenz wrote:

I always wanted to move the clutch to the other side. But didn't think it was possible . Is it a real problem or more or less switching axle and clutch parts side to side?

We have yet to complete this project, but I have read several threads about this, and all indications that I can see since opening up the tractor appear to be 'just' a matter of switching components. "Nuthin' to it but to do it" Wink

I fully intend to post updates as we make progress.


Posted By: rilenz
Date Posted: 18 Nov 2025 at 5:49am
will definitely be on the lookout for your progress and hopefully attempt the task after the winter plowing I do with my ac ca


Posted By: Les Kerf
Date Posted: 18 Nov 2025 at 12:57pm
I opened up the Lambert clutch today, at a bare minimum it is in need of new clutch linings, re-surfacing the pressure plates would probably be advisable. Also, the brake drum surface is heavily worn.

I am open to suggestions Smile


Posted By: PaulB
Date Posted: 18 Nov 2025 at 1:59pm
Check with Rick Corder. That clutch disc uses the exact same lining as a certain hated color tractor's brake disc. He's not doing clutches any more, but he just may reline that disc for you. 

If he won't I could reline your disc. 


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If it was fun to pull in LOW gear, I could have a John Deere.
Real pullers don't have speed limits.
If you can't make it GO... make it SHINY


Posted By: Les Kerf
Date Posted: 19 Nov 2025 at 6:33am
Originally posted by PaulB PaulB wrote:

...
If he won't I could reline your disc. 

Thanks Paul, I may need to take you up on that offer, Rick was pretty adamant when announced that he was quitting the clutch business.


Posted By: rilenz
Date Posted: 20 Nov 2025 at 8:18am
Hey Les according to a fellow on here he used a piece of DOM pipe


Posted By: Les Kerf
Date Posted: 20 Nov 2025 at 8:45am
Originally posted by rilenz rilenz wrote:

Hey Les according to a fellow on here he used a piece of DOM pipe

That would likely be the easiest way to facilitate sleeving.


Posted By: Les Kerf
Date Posted: 07 Feb 2026 at 1:02pm
Originally posted by rilenz rilenz wrote:

will definitely be on the lookout for your progress and hopefully attempt the task after the winter plowing I do with my ac ca

Well, I am somewhat sad to announce that we will NOT be moving the hand clutch to the left side at this time Cry

The reason is economic rather than technical, to wit: In order to move the clutch to the other side requires pulling or pressing the brake drum from the pinion shaft; my brake drum is serviceable and there is no leaking of gear lube from the outboard side.

I don't have a suitable puller for the task, and having it pressed off would mean taking it to a press.

After researching this it also seems that there is a high probability of breaking the brake drum in the process due to the relative brittleness of the drum and the fact that they have been stuck on there for well over half a century.

This is a risk I choose not to take at this time. If the brake drum were in need of replacing I would just cut it out of there and be done with it.

Sorry to have disappointed you.


Posted By: Ken Mn
Date Posted: 07 Feb 2026 at 2:36pm
Les: I have had the hand clutch out of my 1953 CA a few times and did not have to press or pull anything off. There is a key way on the shaft that goes to the final drive and a splined shaft from the differential into the clutch unit. I have always left the shaft in the differential and removed the clutch assembly from it.


Posted By: Les Kerf
Date Posted: 07 Feb 2026 at 4:54pm
Originally posted by Ken Mn Ken Mn wrote:

Les: I have had the hand clutch out of my 1953 CA a few times and did not have to press or pull anything off. There is a key way on the shaft that goes to the final drive and a splined shaft from the differential into the clutch unit. I have always left the shaft in the differential and removed the clutch assembly from it.

Yup.
Reckon I wasn't clear in my post; it is the other side that would need pressed out in order to swap the hand clutch to the left-hand side.

I have had the hand clutch out, rebuilt it, and now it has been re-installed on the original side. Smile


Posted By: SteveM C/IL
Date Posted: 07 Feb 2026 at 11:51pm
I don't know these tractors. I assumed you just swapped axle hsg side to side and clutch went with it.


Posted By: Les Kerf
Date Posted: 08 Feb 2026 at 8:09am
Originally posted by SteveM C/IL SteveM C/IL wrote:

I don't know these tractors. I assumed you just swapped axle hsg side to side and clutch went with it.

That would be too easy! Big smile
The CA housings are definitely not ambidextrous because they angle down and backward to increase the overall length of the wheelbase rather than being straight down like the B's and C's, plus the hole where the clutch actuator lever goes in is toward the front (there is one on each side).

While the housings were off I was able to peek inside at the differential gears, they appear to be virtually pristine; I also took the transmission side cover off and those gears are in excellent shape as well. This tractor looks like it has led a relatively easy life.

We originally split this tractor to fix a leaky rear main seal and replace the slipping clutch. I pulled the flywheel yesterday and there is no evidence of a seal of any kind having ever been in there Shocked The groove in the seal retainer is clean and completely empty. I have seen a seal missing a chunk of cork on my Model C but this is a new one for me. It really didn't leak any worse than the one with the chunk of cork missing though.





Posted By: wjohn
Date Posted: 08 Feb 2026 at 10:02am
Originally posted by Les Kerf Les Kerf wrote:

I also took the transmission side cover off and those gears are in excellent shape as well. This tractor looks like it has led a relatively easy life.

You lucky dog!! LOL


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1939 B, 1940 B, 1941 WC, 1951 WD, 1952 CA, 1956 WD-45


Posted By: rilenz
Date Posted: 08 Feb 2026 at 7:04pm
Sorry to hear you are not moving your hand clutch. But my next ? is did any CA's come with the lever on the left side and if not was it terribly difficult to move.


Posted By: Les Kerf
Date Posted: 08 Feb 2026 at 7:51pm
Originally posted by rilenz rilenz wrote:

Sorry to hear you are not moving your hand clutch. But my next ? is did any CA's come with the lever on the left side and if not was it terribly difficult to move.

I have read that some were shipped on the left side but I have no proof.

The only thing that kept me from doing the swap is the fact that I was too chicken to attempt pressing the brake drum off of the left-hand shaft. There is truly no reason this swap cannot be accomplished though as long as you are willing to do the complete disassembly of both sides, then swap them.

The operating handle may need some modification (bending?) as it will point the wrong way.



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