disassembly of pto shaft

Theron

New User
I have a PTO shaft with the metal shield body. It has been sitting and is rusted in the shaft. I need to disassembly it and remove the outside metal spin shield to heat the square shaft. I can't figure out how to remove the shields from the yokes. Can anyone help me with this?
 
(quoted from post at 12:26:36 08/14/21) I have a PTO shaft with the metal shield body. It has been sitting and is rusted in the shaft. I need to disassembly it and remove the outside metal spin shield to heat the square shaft. I can't figure out how to remove the shields from the yokes. Can anyone help me with this?

If you are unable to separate the telescoping inner shaft and tube you will not be able to remove the outer shield.
 
I just went through this with my pto shaft with the plastic shield. Had to cut the shield off, spray with eust blaster for a few days, tie one end down and hook a come-a-long to the other end. Beat and pull and spray and beat and pull. It finally gave up and came apart.
 
There is a little plastic keeper on each
end just next to the bell.If rusted,or
bent,sometimes the only option is to cut
it off with the 'fireaxe'.
 
(quoted from post at 16:17:05 08/14/21) There is a little plastic keeper on each
end just next to the bell.If rusted,or
bent,sometimes the only option is to cut
it off with the 'fireaxe'.

What direction does the tab move?
 
My PTo is extended about half way so i figured if i can get the shield loose i can collapse done enough that i can drive the pin out and remove the end yolk and slide the hold tube shield off exposing the inner pto.
 
(quoted from post at 16:17:05 08/14/21) There is a little plastic keeper on each
end just next to the bell.If rusted,or
bent,sometimes the only option is to cut
it off with the 'fireaxe'.

Not all PTO shields have plastic "keepers" that pull put, some have a snap ring inside the "belled" end, next to the you, and some have 3 tabs of another sort that pop out.
 
If you know someone with one of the flat bed tow trucks, ask to use the winch to pull the PTO apart. We use to do this with our tilt bed truck we hauled tractors on. We chained one end to the tailgate and the other end to the winch. Then using the winch we pulled it apart. We also used the truck to pull apart hydraulic cylinders that were stubborn.
 
With the end in a vice look at the end near the bell there are different versions some with the plastic tab some have a 3slotted holes with a 3 cornered so to speak snap ring and then some are inside the bell behind the yoke those are the hardest to get apart and back together again. I would just pour some diesel fuel in the shield and the driveshaft if the end has an open hole and let soak for a week or so checking the fuel each day. Might just come loose that way the easiest. I guess I have trouble understanding the reason nobody with just pull the front part off and lay it beside the main shaft or put it inside on a bench after use so this does not happen. Or just grease them at the fitting they usually have out by the end of the telescope with the shield holes aligned. Goes a long ways to keeping them sliding. Our fertilizer spreader sets out a lot and I just oil it up each use and again after so.
 
(quoted from post at 18:10:37 08/14/21) My PTo is extended about half way so i figured if i can get the shield loose i can collapse done enough that i can drive the pin out and remove the end yolk and slide the hold tube shield off exposing the inner pto.



I have never seen a yoke that is held by a pin. They are all welded on.
 
(quoted from post at 07:41:23 08/15/21)
(quoted from post at 18:10:37 08/14/21) My PTo is extended about half way so i figured if i can get the shield loose i can collapse done enough that i can drive the pin out and remove the end yolk and slide the hold tube shield off exposing the inner pto.



I have never seen a yoke that is held by a pin. They are all welded on.

oKZHejG.jpg


I have seen a few older ag drivelines with a square or rectangular shaft and tube that were pinned (some older IH stuff, IIRC), and the newer "Euro" drivelines with "star" or "lemon" or "tulip"-shaped tubing are COMMONLY "pinned" to the yokes.

One can "learn something new everyday" on here!
 


I was thinking as I was typing that I might get picked up on my wording of all instead of "all that I have seen". Always trying to economize on my key strokes.
 
Most square or rectangle shafts are welded and a lot of the newer style lemon and triangle tubes are pinned. A lot will also depend on which he has.
 
My non-extending front PTO shaft on my Woods 121 10' cutter was pinned on the yoke for one end - square shaft. Had a spring pin instead of a standard roll pin. Metal outside safety shaft cover.
 
(quoted from post at 05:04:07 08/15/21) With the end in a vice look at the end near the bell there are different versions some with the plastic tab some have a 3slotted holes with a 3 cornered so to speak snap ring and then some are inside the bell behind the yoke those are the hardest to get apart and back together again. I would just pour some diesel fuel in the shield and the driveshaft if the end has an open hole and let soak for a week or so checking the fuel each day. Might just come loose that way the easiest. I guess I have trouble understanding the reason nobody with just pull the front part off and lay it beside the main shaft or put it inside on a bench after use so this does not happen. Or just grease them at the fitting they usually have out by the end of the telescope with the shield holes aligned. Goes a long ways to keeping them sliding. Our fertilizer spreader sets out a lot and I just oil it up each use and again after so.

So soaked it and got it in a vice. Cut the U=joint out and it gave me a straight shot to the tube. Got a solid bar ion the hole and started pounding. It broke loose after about 10 hard hits. Please note as with this usual situation, after it came out and i slid it back together it moved in and out pretty easy. Even before i greased it. Thanks for all the suggestions.
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top