Pto shaft

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Als
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Re: Pto shaft

Postby Als » Sat Jan 14, 2017 9:13 pm

Ok here is a better photo showing the relief. It's 1" Long and about .100" deep. The round shiny spot on the left is from the set screw in the bearing lock collar.
Another thought is, this shaft has a ten tooth spline. Is this correct? Could this be a shaft from a diffrent piece of equipment to be able to use other than low-boy specific attachments? All I have that uses it is the pump for the loader. I have no idea if it's the oem shaft or not.
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Bill Hudson
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Re: Pto shaft

Postby Bill Hudson » Sat Jan 14, 2017 9:23 pm

Is the relief tapered? It appears to be in the pic.

Bill
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Als
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Zip Code: 55325

Re: Pto shaft

Postby Als » Sat Jan 14, 2017 11:10 pm

Yes it is. .990 - 1.030 about .040 in 1"
If you want something to change you must change something.

Larry B
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Re: Pto shaft

Postby Larry B » Sat Jan 14, 2017 11:54 pm

I could be wrong but from the picture it looks like a bearing race turned down the shaft. If the wrong bearing that did not have setscrews to hold the inner race to the shaft was used and it was not a tight fit to the shaft it can turn down a shaft like that. Previous owner may have replaced the bearing with a collared inner race bearing to get it to work. Just a guess.

Jim Becker
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Re: Pto shaft

Postby Jim Becker » Sun Jan 15, 2017 12:11 am

Yes, it is as Larry B said. I've seen shafts that were worn undersize by an inner race. They weren't as bad as this, but it would only take more time. The weight of the hydraulic pump may have sped it up (probably caused it). It probably also explains the taper.

Here is an example where somebody else was having a similar problem.
http://www.maintenance.org/topic/shaft-worn-out
Look at his attached PDF. You can find more examples by googling something like" bearing shaft wear".

Als
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Re: Pto shaft

Postby Als » Sun Jan 15, 2017 6:59 pm

Yep that's is exactly what has happened. I looked and looked. Got out the magnifying glass and it is wear. Not from the bearing currently on it though. That one is right, just to late. Lol. Sent it to be welded and turned.
The more I dig into this tractor the more I am thinking I'm digging another money pit! Oh well is what it is, I needed another project.
Thanks guys for all the great input.
On to the next thing. Fixing a broken out bolt hole in the rear case. One in the back holding cover and mount for three point. This will be a challenge nickel weld fill then drill and tap the nickel. Hope it holds.
If you want something to change you must change something.

Als
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Zip Code: 55325

Re: Pto shaft

Postby Als » Sun Jan 15, 2017 7:04 pm

Mike; I was wrong. The undercut is wear. It's off being welded and turned now.
You guys know what you know and I don't. I need to trust your expertise better.
Thanks for the help.
If you want something to change you must change something.

Mike H
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Re: Pto shaft

Postby Mike H » Mon Jan 16, 2017 8:23 am

Hey no problem here.

glad that you can fix it

Mike

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Re: Pto shaft

Postby cubber » Sun Feb 12, 2017 9:57 pm

OMG .Just found out mine looks just like that. I can weld it but I have no lathe. Going to try a grinder and file.

Als
Posts: 33
Joined: Wed Dec 02, 2015 5:04 pm
Zip Code: 55325

Re: Pto shaft

Postby Als » Sat Feb 18, 2017 4:31 pm

Try taking it to a trade or high school machine shop. Where I go when I need late work. Cheap!
If you want something to change you must change something.


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