550 PTO Shaft

Hi folks!
I have a project that's been staring at me all summer..and now that my employment status has changed, I have a bit of time to dig in and I'm looking for advice/ideas.

I've got a 550 where the PTO stub shaft sheared off this spring. I've pulled the retaining bolt and tried a lot to get it out. It appears siezed, which doesn't surprise me as I think this little guy sat outside a lot. I was able to get a local machine shop to weld a chunk of round stock with a big 1 1/8 nut on the end of what was left and that is where we are today.

I've wrapped a chain around that and used another tractor to jerk and drag the 550 around the farm; I've taken a slide hammer to it and wailed on it until my arms ache. I've heated it, I've beat on it, I've walked by it every few days with some PB blaster and drizzled it in there. The good news is; I can't seem to bust the welded on stock off.. but I cannot get that sucker out.

I had 2 thoughts:
- Just wail on it until I do finally break the welded on piece off, or, it comes out. If it breaks off, proceed to thought 2.
- Z-Split the tractor and take out the sleeve that contains the stub shaft and replace it and the stub shaft.

I'm assuming that it's a blind hole that the stub shaft goes into, so there isn't any beating it out from the inside, so, I may just be replacing the whole thing. Do you guys have any other ideas?
 
I don't understand this one. The Oliver 550 shaft is like 10 inches long and held in by a bolt. Usually, the collar they go in is worn and loose. You need to dig deeper did someone weld it in? Is it severely twisted? Pto shaft sheered off tells me there is something going on.
 
I've looked pretty long at it. The shear happened along a crack that appears to have started in the hole in the stub shaft for the retention bolt. It had been that way for a while because there was a hint of rust along the crack, which tells me it had been weakened in the past.

I think the shaft is rusted in the sleeve. I had thought it could have been twisted a few degrees wedging it in the sleeve, but I don't think so. The tractor had a lot of water in the hydraulic and rear end reservoirs when I got it, so I think it sat out for a lot of it's life. Tho so far no hint of rear end fluid/hydraulic fluid mixing, so the pan between must have survived.

Otherwise it runs fine, PS leaks a bit but other than no pto, seems fine.
 
Hi folks!
I have a project that's been staring at me all summer..and now that my employment status has changed, I have a bit of time to dig in and I'm looking for advice/ideas.

I've got a 550 where the PTO stub shaft sheared off this spring. I've pulled the retaining bolt and tried a lot to get it out. It appears siezed, which doesn't surprise me as I think this little guy sat outside a lot. I was able to get a local machine shop to weld a chunk of round stock with a big 1 1/8 nut on the end of what was left and that is where we are today.

I've wrapped a chain around that and used another tractor to jerk and drag the 550 around the farm; I've taken a slide hammer to it and wailed on it until my arms ache. I've heated it, I've beat on it, I've walked by it every few days with some PB blaster and drizzled it in there. The good news is; I can't seem to bust the welded on stock off.. but I cannot get that sucker out.

I had 2 thoughts:
- Just wail on it until I do finally break the welded on piece off, or, it comes out. If it breaks off, proceed to thought 2.
- Z-Split the tractor and take out the sleeve that contains the stub shaft and replace it and the stub shaft.

I'm assuming that it's a blind hole that the stub shaft goes into, so there isn't any beating it out from the inside, so, I may just be replacing the whole thing. Do you guys have any other ideas?
You don't have to Z split it to get the shaft out. If you call me, I can walk you thru how to do it. Kent Gordon, 903 391 7626.
 

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