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JD slipping clutch

B

BABAWS80

New User
The clutch on my 1952 JD A is slipping. I have attempted to adjust it several times. I don't get a good clunk when engaging and disengaging - just a low level clunk. I took clutch apart up to the driver. Discs,gears and springs are in very good shape. Do I have to do further teardown or am I not adjusting correctly.
 
My 60 had a similar problem. 2 of the 3
clutch dogs were worn severely and cracked
to the point that when the clutch was
snapped in, only 1/3 of it was clamping. 3
new dogs and now works great.
 
On my '52 A a cotter key had come out on the back end of one of those long bolts. This caused the pivot pin to drop out. So mine was only clamping on 2 bolts.

Also, you do have the clutch engaged when adjusting it, right?
 
Thank you, Drew. Sounds very much like that could be my problem. Was hoping I wouldn't have to tear it down further but I guess I do.
It will be a while before I get it done but will let you know how it comes out.
Thanks again.
 
(reply to post at 21:32:38 03/22/20)
Click to expand...

Thank you Rich. I checked the long bolts and they can be rotated slightly by hand but appear to have a stop limiting the movement. They won't pull out axially. I understand what you were saying but don't think that is my problem. Unfortunately I have to bite the bullet and disassemble the clutch further.
Thanks again.
 


Since the last entry I have been trying to get clutch drive gear off.
Last attempt made a puller by bolting 4 quarter inch strips of steel 1 1/2 inches wide bolted together. Drilled holes for 1/2 in grade 5 bolts to fit in the key slot openings and fit against the bolt in the crankshaft. Torqued down enough to bend the strips without seeing any movement of the drive gear at all. Need suggestions on removing drive gear from crank. Thinking about buying 3 leg puller to pull against the 4 in gear in front. Is this a smart thing to do or is there a very high likelihood of breaking a gear tooth?
BABAWS80
 

I finally got the drive gear off. To go further and take the pulley off I will need to move the wheel out. Don't particularly want to do that. I had much extensive work done on this tractor 11 years ago at a dealership in central Indiana. Reviewed my records and found they completely rebuilt, greased, and adjusted clutch.

All parts are in excellent shape. I can see the "dogs" and they look good although I don't really know what to look for - nothing broken, cracked, sloppy, etc. Parts move smoothly.

Restating my problem is clutch was slipping so badly it wouldn't pull tractor under any kind of load like pulling a wagon. I adjusted the clutch but would not get a strong snap in or out on engagement/disengagement of clutch. I am now questioning whether I was adjusting it correctly. Did I have the lever engaged when adjusting?? Is there something I should look for before reassembling? Need some expert advice.
 
(quoted from post at 17:04:46 05/10/20) The lever should be engaged when adjusting.
Click to expand...


Disassembly of everything appeared to be in very good shape.
Clutch had been rebuilt about 11 years ago. When reassembling I remembered there were six washers on the pressure plate bolts on the inboard side of the pressure plate. I believe they were keeping the plate from further adjustment. I put them on the nut side of the plate to provide the correct spacing for the castellated nuts and cotter pins. Adjusted the clutch and everything is hunky dory. Good snap on application and release and no more slipping.

Thanks to all for your inputs.


Babaw
 
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