Clutch Sleeve

Navajo350

Member
Anyone have to machine a new clutch driving pin, C404R, for their belt pulley on a JD two cylinder? Do you think a worn out pin would cause the slot in the clutch sleeve where the fork goes into to ware enough to cause it to be out of round?

Some sound advice from the guys that practically see it all would help. Awhile back I've had all the clutch lever and linkage tightened up, and again, after tightening the endplay to .010, I've made aware a new problem that was maybe there all along, now the clutch lever bounces pretty consistently when engaged. I have had a new pin machined, and now the clutch works like it's suppose to, but again, lever bounces.

Literally I can see the pulley maybe moving slightly in and out. When I put full forward pressure on the clutch lever when engaged and tractor running, it seems to stop it, like the fork assembly is pushing the sleeve fully outward. Is it the pulley bushing? I ordered one just to get rid of a variable, and because the original one looks pretty rough.

Again, the expert's advice that has had these two cylinder JD clutches apart quite a bit would be appreciated. I'm sure they have seen this.
 
"Literally I can see the pulley maybe moving slightly in and out. When I put full forward pressure on the clutch lever when engaged and tractor running, it seems to stop it, like the fork assembly is pushing the sleeve fully outward."

With the clutch engaged, the pulley is locked to the "driving disc" which is splined and a tight fit to the crankshaft.

If the driving disc is TIGHT on the crankshaft the only way the pulley can move in and out with the clutch engaged is crankshaft endplay. Think about it... with the clutch engaged, the inner (loose) clutch lining is mashed tight between the pulley and the driving disc making them literally one unit.

It would be interesting to install the driving disc with the rest of the clutch/pulley removed and check the disc for "runout" with a dial indicator.
 
(quoted from post at 11:28:21 08/19/16) "Literally I can see the pulley maybe moving slightly in and out. When I put full forward pressure on the clutch lever when engaged and tractor running, it seems to stop it, like the fork assembly is pushing the sleeve fully outward."

With the clutch engaged, the pulley is locked to the "driving disc" which is splined and a tight fit to the crankshaft.

If the driving disc is TIGHT on the crankshaft the only way the pulley can move in and out with the clutch engaged is crankshaft endplay. Think about it... with the clutch engaged, the inner (loose) clutch lining is mashed tight between the pulley and the driving disc making them literally one unit.



It would be interesting to install the driving disc with the rest of the clutch/pulley removed and check the disc for "runout" with a dial indicator.

What's creating the "pulsating feeling" in the clutch lever when your hand is on it?
 
The only problem I have been able to link to the worn out operating sleeve hole and pin to hold it in place was you had a hard time getting the clutch to stay adjusted once you just adjusted it.
 
Check the crankshaft end clearance, too much will cause the clutch lever to "bounce" while running. End play should be .005 - .010.
 

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