Question about 8N PTO engage mechanism

(quoted from post at 13:44:05 06/21/10) If the PTO shaft gets twisted to the extent that the PTO lever cannot engage then the pic below (upper left hand corner) makes me think that a slight rotation of the PTO shaft would then let it engage. That was not the case with mine as nothing I could do would get the PTO engaged. ??????
I can understand why a twisted shaft would not let you extract the shaft back thru the hyd pump but not why I couldn't get the PTO to engage even with the twisted shaft.

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(quoted from post at 13:44:05 06/21/10) If the PTO shaft gets twisted to the extent that the PTO lever cannot engage then the pic below (upper left hand corner) makes me think that a slight rotation of the PTO shaft would then let it engage. That was not the case with mine as nothing I could do would get the PTO engaged. ??????
I can understand why a twisted shaft would not let you extract the shaft back thru the hyd pump but not why I couldn't get the PTO to engage even with the twisted shaft.

Click to expand...

(quoted from post at 16:20:47 06/21/10) Good job, TOH! Your addition to my words needed to be made. Here is a picture from the past that expands a bit more showing sleeve (717) that slides over hub (716), engaging the PTO.

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(quoted from post at 20:30:00 06/21/10)

(quoted from post at 16:20:47 06/21/10) Good job, TOH! Your addition to my words needed to be made. Here is a picture from the past that expands a bit more showing sleeve (717) that slides over hub (716), engaging the PTO.

Click to expand...

Always got the right picture with annotation!! Just got a copy of PS and I'm gonna have to learn to drive it. I'm beginnig to wonder what other goodies your "private" picture collection might contain .....

TOH

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(quoted from post at 22:48:25 06/21/10) Jmor -

The pto shifter handle only travels half the distance it use to travel. When I press backward on the lever handle I can feel it hitting an obstruction after about 1/2 the normal travel of the handle. For the last couple of years the shifter handle has been stopping halfway with an push needed to get it to engage. This "push" has gotten harder and harder to do over time. Finally last week it just wouldn't go at all.

The PTO shaft is in place and not protruding more than it should from the rear of the tractor. As a matter of fact, when I press hard in the shafter handle I can see the PTO shaft move backward about 1/16" (this is with the 4 bolts on the rear removed).

So, something in there is skrewed up and needs a look see. Your pics have made me realize that it ain't that complicated.

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(quoted from post at 20:55:04 06/21/10)

(quoted from post at 13:44:05 06/21/10) If the PTO shaft gets twisted to the extent that the PTO lever cannot engage then the pic below (upper left hand corner) makes me think that a slight rotation of the PTO shaft would then let it engage. That was not the case with mine as nothing I could do would get the PTO engaged. ??????
I can understand why a twisted shaft would not let you extract the shaft back thru the hyd pump but not why I couldn't get the PTO to engage even with the twisted shaft.

Click to expand...

Heed JMOR's warnings about jumping to conclusions based on other peoples speculations.

TTT

The PTO shifter collar (item E in Fig 14) is splined to the PTO shaft. It will take only a very small twist (just a few thousndths) in the splined section of the shaft to prevent the shifter from sliding along the twisted splines. That will of course manifest itself as a reduction in travel of the collar.

There are some "dentals" ( a dog clutch) on the ID of the PTO shifter collar (you can see them in the picture) - the dogs engage matching dogs on the end of the transmission output shaft locking the PTO shaft to the output shaft. The dogs can be broken off or worn down by trying to shift the PTO while the output shaft is still spinning - just like shifting gears withe the clutch dragging. When that happens the shifter moves fine but the shafts do not lock together.

So before you do something drastic you need to determine if:

1) the shifter is moving the full distance
2) and if it is are the dog clutch teeth intact.

TOH

PS> It's also quite possible that 95HP into a heavily loaded cutter gearbox will shear those dogs.....

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