pto shaft

hdltch · Feb 20, 2017

Im in the process of pulling my pto shaft out of my 8n tractor. I have the bolts removed and gasket broken lose and the shaft moved forward but it wont come out of the pump. Can some please tell me how to get this pto shaft out of the pump,So I can install a new seal in it asap. Thanks a brunch

Bruce (VA) · Feb 20, 2017

Turn the shaft by hand 1/8 of a turn, then pull out. Repeat 8 times.

If that doesn't work, pull an inspection plate and carefully look at the shaft. If it's twisted, post back.
75 Tips

hdltch · Feb 20, 2017

(reply to post at 13:08:31 02/20/17)

o am I understanding this correctly the shaft has to be turned in a certain position before it will come out. Trying to put in a seal and clean out the rear sump.

Bruce (VA) · Feb 20, 2017

" So am I understanding this correctly the shaft has to be turned in a certain position before it will come out"

No.

It should come out easily no matter what position it's in.

But............

If the shaft is damaged (twisted) turning and pulling just might find the sweet spot that allows a twisted shaft to come out.

If you try 8 or 10 different positions with the shaft w/ no luck, look at the shaft & see if it's twisted.
75 Tips

Dean · Feb 20, 2017

Sounds like it's twisted.

If you're lucky (I wasn't) you may be able to remove it with a slide hammer puller.

I had to torch mine off on both ends of the pump and drive the stub out of the pump with a sledge once the pump was out of the tractor.

Dean

souNdguy · Feb 21, 2017

Ditto as said.. may very well be twisted. Also as said. if it's only SLIGHTLY twisted, sometimes you can coax them out. if
it's bad twisted.. that front spline won't travel thru the pump.

Caryc · Feb 23, 2017

(quoted from post at 19:58:24 02/20/17) Sounds like it's twisted.

If you're lucky (I wasn't) you may be able to remove it with a slide hammer puller.

I had to torch mine off on both ends of the pump and drive the stub out of the pump with a sledge once the pump was out of the tractor.

Dean

You've got to wonder what happens to a tractor to twist a shaft that bad. When I first got my 8N it came with a woods mower on it. I used it to clear my virgin 5 acres and it took some unbelievable whacks. The slip clutch was also rusted and frozen. I didn't even know what the slip clutch was for then. There was also no stump jumper on the mower.

So eventually I fixed the slip clutch and put a stump jumper on it. I was always scared to death to try to remove the 1 1/8" shaft to replace it with a 1 3/8" shaft. But when I finally had to remove the top cover for repairs, I decided to get the new 1 3/8". That old shaft slid right out of there like it was installed at the factory yesterday. I really expected to have trouble with it.

Like I said it really makes me wonder what you have to do to a tractor to twist a shaft that bad.

HFJ · Feb 23, 2017

(quoted from post at 19:12:43 02/23/17)

(quoted from post at 19:58:24 02/20/17) Sounds like it's twisted.

If you're lucky (I wasn't) you may be able to remove it with a slide hammer puller.

I had to torch mine off on both ends of the pump and drive the stub out of the pump with a sledge once the pump was out of the tractor.

Dean

Click to expand...

You've got to wonder what happens to a tractor to twist a shaft that bad. When I first got my 8N it came with a woods mower on it. I used it to clear my virgin 5 acres and it took some unbelievable whacks. The slip clutch was also rusted and frozen. I didn't even know what the slip clutch was for then. There was also no stump jumper on the mower.

So eventually I fixed the slip clutch and put a stump jumper on it. I was always scared to death to try to remove the 1 1/8" shaft to replace it with a 1 3/8" shaft. But when I finally had to remove the top cover for repairs, I decided to get the new 1 3/8". That old shaft slid right out of there like it was installed at the factory yesterday. I really expected to have trouble with it.

Like I said it really makes me wonder what you have to do to a tractor to twist a shaft that bad.

i was just reading about this stuff. my newest theory is that the plane it was powering tried to bank too sharply :idea:

Kiss4afrog · Mar 9, 2017

I found out I have the original smaller PTO shaft. Is there any advantage to replacing it with the 1-3/8" shaft ?? Is the shaft any stronger or is it just that the 1-3/8 size is more common with current equipment ??
If there isn't a strength advantage would it make sense to just add a 1-1/8 to 1-3/8 overrunning clutch and any idea if that fits under the screw on cover ??

Sorry if off OPs topic .

Caryc · Mar 9, 2017

(quoted from post at 21:12:11 03/09/17) I found out I have the original smaller PTO shaft. Is there any advantage to replacing it with the 1-3/8" shaft ?? Is the shaft any stronger or is it just that the 1-3/8 size is more common with current equipment ??
If there isn't a strength advantage would it make sense to just add a 1-1/8 to 1-3/8 overrunning clutch and any idea if that fits under the screw on cover ??

Sorry if off OPs topic .

Look at your 1 1/8" PTO shaft and see if it has a groove around the circumference to accommodate a quick connect ORC.

My 8N had the original 1 1/8" pto shaft with no groove in it. That meant that I could not use a quick connect ORC on it. I changed out that shaft for a new 1 3/8" shaft.

The 1 3/8" shaft has a groove in it that accepts the quick disconnect ORC that you see in the picture below. The reason I changed out the shaft is because most modern implements use a 1 3/8" connect to your PTO. But even better, it lets me use that quick disconnect ORC which I can easily pull off and then place the cover on the PTO when I"m not using it. When you have an ORC of any kind on your PTO, you can not use the stock PTO cover.

Kiss4afrog · Mar 10, 2017

Thanks Caryc. I'm pretty sure I have the groove but I'll recheck to make sure. :wink:

jimtrs · Mar 10, 2017

(quoted from post at 00:12:11 03/10/17) I found out I have the original smaller PTO shaft. Is there any advantage to replacing it with the 1-3/8" shaft ??

The advantage of a 1-3/8 shaft is that you will not need an adapter to run common equipment.

Is the shaft any stronger

I don't think you would ever notice any strength difference, though I guess being larger it would be stronger

If there isn't a strength advantage would it make sense to just add a 1-1/8 to 1-3/8 overrunning clutch

Some equipment you want / need an ORC. Other times, the added length can create problems. This is where you would use an adapter, though they can be weak and blow out. You cannot easily cover a PTO with an ORC on it. So you should remove an ORC when not using it.

any idea if that fits under the screw on cover ??

A new 1-3/8 shaft will not fit the old original small cover. They come with new ugly aluminum covers that fit.

pto shaft

hdltch

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Bruce (VA)

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hdltch

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Bruce (VA)

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Dean

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Caryc

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