CA Help
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=45215
Printed Date: 11 Sep 2025 at 4:43pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: CA Help
Posted By: Josh Day
Subject: CA Help
Date Posted: 08 Feb 2012 at 3:27pm
| I just finished putting on a front end that I recently rebuilt for my CA, I was going to take it for a drive and when I went to put in gear, the clutch wouldn't stop the trans. So, I called Bill at Sandy Lake Imp. and he said to start it in gear so I did. Well, that didn't work. The clutch stops the tractor when I start it in gear, but when I take out of gear and go to put it back in it grinds like the clutch isn't even disengaed.It worked great before I blocked up about 3 weeks ago. I just put the new clutch, presser plate about 4 months ago and it worked fine then.What could be the problem, Thanks for any help. Josh |
Replies:
Posted By: Dave Richards (WV)
Date Posted: 08 Feb 2012 at 3:57pm
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Josh, May be any number of things. however, things to look for. Clutch rod out of adjustment. (maybe, but not likely) Clutch plate glued to fly wheel. (Good chance if it sat for a while) The original clutch plates were made of a lot of asbestos which is not not used. The newer ones use a lot of epoxy and will attach themselves to the fly wheel. The CA should have an inspection port on the bottom of the torque tube to get at the throwout bearing. you need to lock out the clutch pedal, have someone hand crank the engine with the sparkplug wires pulled. and watch to see if the flywheel turns independant of the clutch plate. You can see this through the starter hole also. If it is stuck, you might be able to use a sharp putty knife to brake it open. I cant remember which tractor it was where I went through the starter hole and used a putty knife with a 90 degree bend in it to work at the clutch plate. Do a little at a time and rotate the clutch. Before trying this, wait for some more opinions. |
Posted By: GregLawlerMinn
Date Posted: 08 Feb 2012 at 4:14pm
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Agree with Dave; clutch rod not properly adjusted and/or clutch stuck on flywheel. Check that the clutch rod is engaged and the proper length (approx 3/4" free travel before engaging the clutch). I have freed up frozen clutches by chaining the tractor to a tree (or other immovable object), and use the hand clutch to engage the engine clutch. Try it 1st in neutral, can try it in 3rd or 4th gear; just ease into it with the hand clutch. If these remedies don't work, you should split it and check out the clutch, pressure plate, and T/O bearing. It is also possible that the T/O bearing came off the yoke and is not disengaging from the flywheel (tho it is more possible that the clutch disc is frozen to the flywheel). ------------- 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: Robert Mull Georgia
Date Posted: 08 Feb 2012 at 4:46pm
| Try starting it in gear and drive it around some pushing the clutch pedal in and even letting it slip some to wear down the clutch face some. |
Posted By: Creek Jenkins
Date Posted: 08 Feb 2012 at 4:49pm
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My D17 clutch was froze to the flywheel after 3-4 years of sitting in the woods, it was really glued tight. Housing was full, and I mean full, of mouse nest(s). After cleaning out all the mouse stuff, I sprayed in some Kroil or WD40 a couple times, tried chaining it to a stump and using the hand clutch, it just spun the tires.
Finally my BIL tied the clutch down and went in thru the inspection hole with a long thin bar and popped her loose. For a month or so after that I kept it tied down when not in use as it had a tendency to stick again. If yours is stuck, it prob isn't as bad as it hasn't set for so long bathed in mouse pee.
cheers,
Creek
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Posted By: Dick L
Date Posted: 08 Feb 2012 at 4:52pm
I would guess if when you stop the tractor with the clutch in gear and it does not try to pull the tractor as it sets running that you have a pilot bearing problem. The clutch could be dragging a little also. Seems like it would have been dragging when you first put it in if that was the problem. Still sounds like you will need to split the tractor and check it out. Make sure that the end of the drive shaft that enters the pilot bearing in not damaged or rough. It needs a dab of grease on it as well when assembling.
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Josh Day wrote:Posted By: ALinIL
Date Posted: 08 Feb 2012 at 5:23pm
| I agree with Dick. I rebuilt the clutch, pressure plate, pilot bushing and ring gear. After bolting the housing back together and adjusting the clutch rod the clutch would not disengage. The pilot bushing was too tight, had to split tractor again and redo the bushing. |
Posted By: Josh Day
Date Posted: 08 Feb 2012 at 6:39pm
Thanks for all the responses...but what I can't figure out is why it worked fine before I rebuilt the front end and after, it won't work.But it sounds like I'll be spliting it, but that is what makes it fun 
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Posted By: Dick L
Date Posted: 09 Feb 2012 at 5:22am
| A tight fitting bushing on a shaft (can) pick up material from the bushing or shaft and make it tighter or freeze up. Weld together or how ever you say it. It might not be your problem but is just my guess. Damage to one or the other could cause this type of problem or even dirt getting between the shaft and bushing could. |
Posted By: Josh Day
Date Posted: 09 Feb 2012 at 6:44am
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Looks like I'll be splitting it again.... Oh well, that's what makes it fun, Thanks for the help.
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Posted By: SteveC(NS)
Date Posted: 09 Feb 2012 at 11:09am
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Before you split the tractor let me try to understand, you said "The clutch stops the tractor when I start it in gear" So, If you start in in gear and let the clutch pedal out it moves in that gear and when you depress the clutch it stops moving, right? Then the clutch plate is NOT frozen to either the flywheel or the pressure plate. There must be something causing friction between the flywheel or pressure plate and the disc. I can't see the throwout bearing causing the driveshaft unless it has begun to rub the driveshaft some way. I would start the tractor in gear and drive it around for a bit depressing the clutch pedal and releasing it often. Try starting it in other gears and do the same thing. The friction cause may diminish with use. Good luck.
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Posted By: SteveC(NS)
Date Posted: 09 Feb 2012 at 11:10am
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Posted By: SteveC(NS)
Date Posted: 09 Feb 2012 at 11:13am
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I dunno why my post is negative did I hit quote instead of edit? Josh maybe this is an omen telling you not to put too much faith in my analysis. LOL
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Posted By: Josh Day
Date Posted: 09 Feb 2012 at 4:19pm
Yes that is right. |
Posted By: Josh Day
Date Posted: 09 Feb 2012 at 4:20pm
 I hope not...I will try anything before I split it. But if that is what i comes to, oh well.
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Posted By: SteveC(NS)
Date Posted: 10 Feb 2012 at 11:25am
| I had a "B" that wanted to grind gears when I stepped on the clutch and tried to shift from neutral into gear. What I had to do was engage the PTO, that presented enough drag to stop the driveshaft spinning when I depressed the clutch. |