Farm Equipment - PTO Drive Shaft

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PTO Drive Shaft

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=135991
Printed Date: 03 May 2025 at 9:38am
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Topic: PTO Drive Shaft

Posted By: boilerpete
Subject: PTO Drive Shaft
Date Posted: 08 Mar 2017 at 7:54pm

I've got a PTO shaft with the yoke that has the collar that slides forward to lock onto the PTO shaft. There are 4 ball bearings in the yoke that are supposed to release when the collar slides and then lock onto the detente on the PTO shaft after the collar is released. It worked just fine when I parked the spreader last fall, but I can't get the ball bearings to release and lock onto the PTO this spring. They rotate with my finger, so they're loose, but they won't release. I've soaked in in PB blaster, don't think there's any crud in the collar, could be wrong on that though.

Ideas? Thanks in advance!

Replies:

Posted By: DiyDave
Date Posted: 08 Mar 2017 at 8:36pm

Assuming there is no physical obstruction, causing the shaft not to slide all the way forward, have you tried to rotate the shaft's position on the pto shaft?(try shifting the imp shaft a couple splines over) sometimes wear can cause the situation you describe...

Posted By: JoeM(GA)
Date Posted: 08 Mar 2017 at 8:46pm

I've had to stick the locking end in a bucket with diesel fuel or kerosene and let it soak a day before. Sounds like you might have a bit of rust or grit up under the collar not letting it spring forward enough to push the balls down

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Allis Express North Georgia
41 WC,48 UC Cane,7-G's,
Ford 345C TLB

Posted By: MACK
Date Posted: 08 Mar 2017 at 8:47pm

Collar may not be moving far enough to let balls drop out far enough. MACK

Posted By: TimNearFortWorth
Date Posted: 08 Mar 2017 at 9:03pm

Have one on a post hole auger that was left on the place when I bought it. Does the same if not protected when not in use and also lubed well.
Likely have grit in the assy. and it does not take much to keep the collar from coming forward over the balls.
Second the soaking it in diesel comment mentioned, and keep working it by rotating it while in diesel.