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Implement Alley Discussion Forum

PTO shaft won't slide

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Dave (IL)

11-20-2004 16:13:50




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Bought a used BushHog. Can't find numbers on it, but it looks just like the SQ84T on their web site.
The pto shaft is pushed together and will not slide. Beat on it. Tied a chain on it and yanked. Heated it, etc. Any suggestions.
I'm assuming the front section is the outer and slides over the back section. The two ends are pushed together and it's difficult to tell exactly where it should be coming apart.
Also, if I have to remove it to get it to a shop, is it better to split the u-joint or take the bolts out of the slip clutch.
Thanks

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Randy-IA

11-21-2004 16:05:38




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 Re: PTO shaft won't slide in reply to Dave (IL) , 11-20-2004 16:13:50  
When and if you do get it apart it might be a good idea to drill and tap for a grease zerk about a third of the length of the outer shaft from the open end . Good luck ! Randy



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Tim(nj)

11-21-2004 11:32:49




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 Re: PTO shaft won't slide in reply to Dave (IL) , 11-20-2004 16:13:50  
If you end up wrecking something, instead of matching up parts, both Sloan Express and Agri-Supply have complete PTO assemblies with the rolling shields. $70 to $90 for one with a shear-pin machine, about $150 for one with a new slip-clutch with it. I am going this route with a PHD I was given that has a bent shaft.



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Dave (IL)

11-21-2004 11:39:58




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 Re: PTO shaft won't slide in reply to Tim(nj), 11-21-2004 11:32:49  
Thanks, will be checking out parts pricing with a dealer this week. Good to have the alternatives you've provided.



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Chuck in Ks.

11-21-2004 10:50:06




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 Re: PTO shaft won't slide in reply to Dave (IL) , 11-20-2004 16:13:50  
Dave, I also had the same problem. I put as much penetrating (sp) oil between the shafts as possible, then I placed the shaft between 2 solid objects, tied one end with a chain and placed a come along on the other end. I keep tension on it, tapped on it with a rubber mallet and kept adding p-oil to it daily.
I keep tension on it all the time and 2 or 3 times a day I would tighten the come along a little more. Finally after 2 or 3 days I went out to it and the shafts had came apart. No damage to anything. The shafts had rusted together from non use.
Good Luck
Chuck

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kyhayman

11-21-2004 07:55:44




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 Re: PTO shaft won't slide in reply to Dave (IL) , 11-20-2004 16:13:50  
Heat :-), lots and lots of heat (I've the better part of a tank of oxygen before heating just 1 shaft) 2 tractors, 2 chains. One pull, something has to give. Its not doing you any good like it is.



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paul

11-21-2004 08:42:52




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 Re: PTO shaft won't slide in reply to kyhayman, 11-21-2004 07:55:44  
Would be my way. I have one with the metal cover on it, not sure what to do with that one - hate to ruin the cover.

If you have to take it off & take it somewhere, unbolt, don't mess with the U joint.

--->Paul



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RickB

11-21-2004 02:42:41




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 Bent/twisted tubes=replace in reply to Dave (IL) , 11-20-2004 16:13:50  
Look into the bell of one end of the shielding. if the shaft is a "metric shaft" with three sides or a lemon shape, the inner AND outer tubes are twisted or galled. Replace them. Remove one shield from the yoke, collapse the shields together and cut the shaft right behind the yoke. You can then save the shield after removing it from the other yoke. Then work on matching and replacing the tubes.



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Dave (IL)

11-21-2004 05:26:55




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 Re: Bent/twisted tubes=replace in reply to RickB, 11-21-2004 02:42:41  
Thanks for the term "metric shaft". It's definitely a three sided shaft. The shield was a one piece, black plastic, accordian affair. It's similar to the shield over the shaft that connects the two gear boxes, so I think it's original. It's definitely not what is shown in the on-line parts book. But we ripped it off yesterday to get to the shaft. The shaftlooks just like the parts book and shows no signs of bending or twisting, but I suspect it wouldn't take much now that you mention it.
I could order the parts on-line, but they won't price it on-line. Trick is still to get it apart, and I'd like to avoid splitting the U-joints. If I do have to replace the shaft pieces, I still have to get them out of the U-joints.
Explains why the PTO wasn't hooked up to the tractor it was hanging on! Maybe it wasn't worth $500.

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Dave (IL)

11-20-2004 20:01:50




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 Re: PTO shaft won't slide in reply to Dave (IL) , 11-20-2004 16:13:50  
I knew there was a reason I bought the second tractor with only 3 acres! (my son and I were a little concerned that the H wouldn't start today out of spite that we bought the 641 Ford.) The concensus here seems to be pound and pull harder!

Found a complete parts assembly picture of the powershaft, so now I know where it's supposed to come apert. I was a little reluctant to hammer and yank too much with the shaft still attached to the clutch and gearbox.

There is a roll pin at either end holding the shafts into the U-joint casting. We had on out while we were pouding. Going to try to pull them both, soak it down good, and then try the two tractor yank. Something should give. Just hope it's not the clutch or gearbox.

Thanks. I'll let you know what happens. Could be a few days before we get back to it.

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kjm

11-20-2004 19:16:05




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 Re: PTO shaft won't slide in reply to Dave (IL) , 11-20-2004 16:13:50  
Dave, This is what I did to mine,I took it off and ran a small chain thru the u joint and tied it to a tractor draw bar, then the same to the other end and tied it to another tractor and pulled them tight. Then the fun part(I had all ready cut off the sheild) hit it twice with a 2lb hammer it came right apart. Good luck KJM



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Gerald J.

11-20-2004 19:11:09




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 Re: PTO shaft won't slide in reply to Dave (IL) , 11-20-2004 16:13:50  
The last one I stuck was stuck more than I could pull by hand. I hitched a cable through the U-joint on one end and to something heavy, then I hitched a light chain to the loader bucket and lifted gently. It came apart. What had happened was that I'd turned too tight with the draw bar too short and banged the end of the inner shaft against the middle of the U-joint peaning it into a bit of a rivet head. More like burrs than a real rivet head. But enough to keep the shaft from sliding back out freely.

Gerald J.

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Dave (IL)

11-20-2004 18:40:29




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 Re: PTO shaft won't slide in reply to Dave (IL) , 11-20-2004 16:13:50  
I found Bush Hog's pdf manual on the Squealer mowers. Only a couple pix of my model. It does have instruction on how to cut the shaft and you can barely see the oddball shape of it. It also looks like they have upgraded the shaft since mine. There is now a sliding pipe cover instead of the big plastic accordian cover. Maybe more people had problems! :)



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Bob

11-20-2004 17:48:27




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 Re: PTO shaft won't slide in reply to Dave (IL) , 11-20-2004 16:13:50  
The shaft or tube that it slides in to may be twisted a bit from overloads and somehow it got forced together farther than normal, so it's REALLY stuck. I don't know what to add besides what the others said. Keep soaking it with penetrating oil, and tapping on it, and trying to pull it apart.



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thurlow

11-20-2004 17:44:24




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 Re: PTO shaft won't slide in reply to Dave (IL) , 11-20-2004 16:13:50  
I've had one or two I couldn't get apart; when you were yanking on it with a chain, did you have the mower mounted on a tractor? If not, mount it; try a come-a-long running underneath the tractor and to the front axle or..... ...use a chain and hook to a tree and back the tractor up; can't believe it won't come apart.



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Sid

11-20-2004 16:55:23




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 Re: PTO shaft won't slide in reply to Dave (IL) , 11-20-2004 16:13:50  
On mine the front part is the square shaft that goes in side. If you can find the grease zerk where the parts slide (not the U-joints) try forcing grease if you can't get it to take grease. I would take the U-joint apart as that makes it less bulky to work with. I laid one in a trough made out of an old water heater tank and soaked it in deisel It came apart after a week.



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Dave (IL)

11-20-2004 17:59:34




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 Re: PTO shaft won't slide in reply to Sid, 11-20-2004 16:55:23  
Thanks!
Didn't see any sign of a grease zerk on the sliding part. Is your shaft kind of 3 sided with a raised part in the middle of each side? On each end is a collar that looks like it goes into the U-joint and the shaft goes into that or butts up against it. Hard to tell from mine. Both ends are tight against the collar. There's a roll pin through the U-joint casting close to the collar. Took one of the roll pins out but still nothing budged.
When you look in the front through the U-joint it looks like you can see the end of the inner tube about 4 inches from the end. That's why I thought the rear was the inner.

I was concerned about trashing the U-joint taking it apart.

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Sid

11-20-2004 21:02:08




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 Re: PTO shaft won't slide in reply to Dave (IL), 11-20-2004 17:59:34  
No mine is solid square. Your description sounda like the one on my baler and the front shaft does go over instead of inside. Can you pour pentrating oil or diesel. The bang and jerk methods do work but I preffer to soak when possible and bang and jerk as a last resort.



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Dave (IL)

11-20-2004 21:13:19




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 Re: PTO shaft won't slide in reply to Sid, 11-20-2004 21:02:08  
I totally agree. See my last post above! Thanks.



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Dave (IL)

11-20-2004 17:44:54




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 Re: PTO shaft won't slide in reply to Sid, 11-20-2004 16:55:23  
Thanks!
Didn't see any sign of a grease zerk on the sliding part. Is your shaft kind of 3 sided with a raised part in the middle of each side? On each end is a collar that looks like it goes into the U-joint and the shaft goes into that or butts up against it. Hard to tell from mine. Both ends are tight against the collar. There's a roll pin through the U-joint casting close to the collar. Took one of the roll pins out but still nothing budged.
When you look in the front through the U-joint it looks like you can see the end of the inner tube about 4 inches from the end. That's why I thought the rear was the inner.

I was concerned about trashing the U-joint taking it apart.

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Sid

11-20-2004 16:54:35




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 Re: PTO shaft won't slide in reply to Dave (IL) , 11-20-2004 16:13:50  
On mine the front part is the square shaft that goes in side. If you can find the grease zerk where the parts slide (not the U-joints) try forcing grease if you can't get it to take grease. I would take the U-joint apart as that makes it less bulky to work with. I laid one in a trough made out of an old water heater tank and soaked it in deisel It came apart after a week.



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