Farm Equipment - B model PTO problem

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B model PTO problem

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=46160
Printed Date: 18 Aug 2025 at 12:10am
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Topic: B model PTO problem

Posted By: outlook6
Subject: B model PTO problem
Date Posted: 24 Feb 2012 at 7:15pm

I have two PTO’s I removed from two 1939 B models I parted out with intentions to rebuild one good one. My problem is I cannot get the cam shaft pushed through the drive gear on either one. Per the disassembly instructions in my manuals, I am using a puller that fits. Even with my 200 lbs bearing down on a breaker bar, I cannot get either shaft to budge.

Is there something I’m missing here? Can I use heat on these parts? And if so, do I heat the shaft or the gear assembly?

As always, any help is greatly appreciated. Thanks in advance.

Jim

Replies:

Posted By: Chalmersbob
Date Posted: 24 Feb 2012 at 9:59pm

mild heat should help, on gear only. You want to expand the gear so it will slide off of the shaft. Keep the puller on it.

The book shows a C clip, bearing , then gear. With the clip and bearing removed, the gear should come next. Good luck. Bob

Posted By: outlook6
Date Posted: 25 Feb 2012 at 5:10pm

Bob,

Many thanks for the response. Heat did the trick. Now if I can just figure out how to get that transmission main shaft roller bearing out I'll have it made. Thanks again.

Jim

Posted By: Dick L
Date Posted: 25 Feb 2012 at 5:30pm

I wouldn't put very much heat on it. The shaft is pressed into the bearing. I just press them out. You can rig a bottle jack to press it out with some all thread and bar steel. Or find someone with a press. If you was close I would press them out for you. It only takes a coupla minutes.