1949 John Deere A clutch

DaveyHeath · Sep 5, 2021

I recently just purchased a 49 JD A. When I got it the clutch was adjusted so tight I had to put all I had to engage and disengage. So I backed the 3 nuts back about 1/4 of a turn. It was good at first, But now the clutch pulley, belt pulley, what ever you wanna call it is really loose. It has play up and down and out and in. But everything else is tight inside the pulley. Only the belt pulley has all the slop. And Ive tried to adjust the clutch a bit tighter and it doesnt seem to adjust now. What is going on with it? Its driving me up the wall. Thanks for any input.

This post was edited by DaveyHeath on 09/05/2021 at 06:22 pm.

RLA · Sep 5, 2021

Pulley has a inside bronze bushing & on the outer side a roller bearing with a race on the crank shaft. Disassemble the whole clutch
check everything for worn parts. Make sure the timing index marks align back up when you re-assemble & install the driver. It MUST!! Be
tight on the crank shaft, if it isn't it MUST be repaired or replaced. Pulley should NOT have any up & down movement it is possible to have
some in & out but not much, some of that when engaged will be crank shaft endplay 10 t0 12 thousands. Disengaged it will have some on a 72
year old tractor but will still work. Replace anything worn out, if you want the clutch to work good, if replaced with new parts it should
last a VERY long time. Years!!

Mike(NEOhio) · Sep 6, 2021

Probably what RLA said but the crank could also have too much end play and loose mains. Check that when you have the pulley off.

DaveyHeath · Sep 6, 2021

(quoted from post at 18:37:49 09/05/21) Pulley has a inside bronze bushing & on the outer side a roller bearing with a race on the crank shaft. Disassemble the whole clutch
check everything for worn parts. Make sure the timing index marks align back up when you re-assemble & install the driver. It MUST!! Be
tight on the crank shaft, if it isn't it MUST be repaired or replaced. Pulley should NOT have any up & down movement it is possible to have
some in & out but not much, some of that when engaged will be crank shaft endplay 10 t0 12 thousands. Disengaged it will have some on a 72
year old tractor but will still work. Replace anything worn out, if you want the clutch to work good, if replaced with new parts it should
last a VERY long time. Years!!

Awesome thank you. I will start ordering parts. Do you know if there is a whole kit for sale?

Loosehandle · Sep 6, 2021

After dismantling the clutch and
removing the driving disc as below,
remove the 4 bolts and clutch fork in
front of pulley. It will slide off if
rear tire isn't too close.

Mike(NEOhio) · Sep 6, 2021

Do you have a manual? Don't start throwing part at it till you know what's wrong and what's needed. Don't know of any kit for clutches. End play of the crankshaft
should be .005-.010. You adjust that at the flywheel, easy job. Some end play is OK for the pulley when the clutch is disengaged. Should be tight when engaged. The
drive disk is splined to the crankshaft and must be tight.

DaveyHeath · Sep 6, 2021

This post was edited by DaveyHeath on 09/06/2021 at 07:09 am.

DaveyHeath · Sep 6, 2021

(quoted from post at 06:56:58 09/06/21) I printed a manual. I guess what I dont understand is everything is tight inside the clutch. No play anywhere inside the pulley. Just the pulley itself is loose. It tightens right up when the clutch is engaged. Could it be because of the flywheel coming loose maybe?

PJH · Sep 6, 2021

Beautiful tractor!

I wouldn't order anything until I had a look inside the pulley.

DaveyHeath · Sep 7, 2021

Thank you, has the power block in it also. Probably why the clutch is all messed up lol.

ezliving · Sep 15, 2021

RLA I have a 1950 A and I have the same problem of engaging and disengaging the clutch. I removed the lever and see the Brass Part, is there any way to make adjustments to this and can I find anything in the manual for this problem?

PS don't see a Pully..?
Thanks

ezliving · Sep 15, 2021

Sorry, found a parts manual. will inspect and adjust if possible.
Thanks

Rich'sToys · Sep 15, 2021

The pulley he is referring to is the belt pulley--the round drum where all the clutch parts are inside of. That is actually used with a long flat belt to power things like threshing machines, etc.
Here is an example:

This post was edited by Rich'sToys on 09/15/2021 at 09:34 pm.

ezliving · Sep 16, 2021

(quoted from post at 21:28:21 09/15/21) The pulley he is referring to is the belt pulley--the round drum where all the clutch parts are inside of. That is actually used with a long flat belt to power things like threshing machines, etc.
Here is an example:

This post was edited by Rich'sToys on 09/15/2021 at 09:34 pm.

Very Cool. That makes sense. Thanks a bunch. I'm tearing into it today and hopefully get it adjusted.

nutsandbolts · Mar 11, 2023

(quoted from post at 06:56:58 09/06/21)

This post was edited by DaveyHeath on 09/06/2021 at 07:09 am.

ice tractor DH.

1949 John Deere A clutch

DaveyHeath

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RLA

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Mike(NEOhio)

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