1950 8N PTO drive shaft broken

lesterg3

New User
OK, I really don't want to do this but can find no one locally to repair my 8N. The PTO drive shaft is obviously broken, has anybody ever replaced one, Information on what to expect, how to do it, issues and other things related to it's replacement would be greatly appreciated.
 
a lil more info or a pic would help. How and where is it broken? Is it physically in two pieces or does it just not engage. PTO assembly's are very cheap from yesterday's tractor co. If it's a actual problem just order a whole assembly.

Drain fluid from rear end via plug on bottom. Un do the four bolts around the housing, slide out "broken" shaft, install new shaft and rear PTO seal. Refill and use.

Good luck
 
lester.......the orignal PTO shaft was 1-1/8, changed to 1-3/8 when 5-nipple sidemount dizzy was made. ALL PTO's fit 1-3/8 including 9N's & 2N's. ALL modern implements use 1-3/8 PTO. Iff'n using fer brush-hoggin, use 1-3/8 ORC (over running coupler) BIG TIP: drive yer tractor NOSE DOWN inna DITCH and ya won't haffta drain 5-gals of hydro-tranny fluid. Sometimes, the PTO gitts WARPED from brush-hoggin without a ORC. Only cure is to use a flame wrench to cutter out. While the orignial spec was 80wt gear oil, Ford now recommends M2C-134D. Otherwize ittza 4-bolt with gasket deal. .......HTH, the amazed Dell and ORC safety preacher
 
Yea, and be prepared to split the tractor and replace the clutch IF u nose it in a ditch and u have a bad tranny input shaft seal.....Don't ask how I know..
 
(quoted from post at 21:18:01 05/22/17) Don't ask how I know..

:lol: tom. either my seal was good or my driveway was (barely) not too steep. had i known of this potential downside, i'd have definitely drained it.
 
just thinking out loud here but...

He did say that the PTO was broken, typically when things break they have tiny little bits of metal. Just thinking he would not want to run fluid with metal bits in it.

A five gallon bucket of UTF is cheap enough
 
(quoted from post at 18:18:01 05/22/17) Yea, and be prepared to split the tractor and replace the clutch IF u nose it in a ditch and u have a bad tranny input shaft seal.....Don't ask how I know..

Your drain hole was probably plugged.
 
More info required I'd say. Define 'broken'. Stopped working? Actually broke the shaft??? Awfully hard to do since it is heat treated steel, super hard so it would take a tremendous force to actually break it, and if so, you'd have done a lot more damage to the transmission internally as well. Perhaps you just have issues with your hydraulic system itself, not the shaft so expand further before doing any work...


[i:654c4848f0][b:654c4848f0]<font size="4">Tim *PloughNman* Daley(MI)</font>[/b:654c4848f0][/i:654c4848f0]<table width="100" border="1" cellpadding="0" cellspacing="0" bordercolor="#000000"><tr><td height="25" colspan="2" bgcolor="#CC0000">
<font color="#FFFFFF" size="3">*9N653I* & *8NI55I3*</font>​
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TPD8N100.jpg
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OK, while brush hogging I got caught up on an old stump that was not visable, it did not shear the bolt but the PTO drive stopped working, I am just assuming the shaft is broken. I was abble to turn the shaft freely by hand with the PTO engaged. I am open to other issues that may be the problem.
 
(quoted from post at 12:44:07 05/23/17)
OK, while brush hogging I got caught up on an old stump that was not visable, it did not shear the bolt but the PTO drive stopped working, I am just assuming the shaft is broken. I was abble to turn the shaft freely by hand with the PTO engaged. I am open to other issues that may be the problem.

One very distinct possibility is the dog clutch used to engage/disengage the PTO shaft. Consult the parts manual for diagrams of the part and it's location.

I'd suggest doing a little investigation before jumping into the shaft replacement. Drain the oil and remove the inspection cover and PTO shift lever on the side of the left side of the center section and see what you can through that opening..

TOH
 
With the PTO lever engaged, you should be able to spin the shaft easily by hand, TRACTOR OFF!!! Disengage the PTO lever then try to spin the shaft by hand -TRACTOR OFF!!! If it does, you have more problems than just a broken PTO shaft. As TOH said, remove side inspection late covers and look inside for any physical damage -TRACTOR OFF. Depress clutch, engage PTO lever, observe what is happening.

TPD
 

If the hydraulics also quit pull the shaft for a look see... If they still work does it have a ORC (over running clutch) were you connect your cutter to the tractor. .
 
As I mentioned I am disabled and have not been able to get out for the last few days, plus we haven't had a day without heavy rain for four days, about 7 inches according to my gauge. But, The PTO shaft does not feel broken or damaged when I turn it by hand, it turns easily by hand with or without the PTO engaged, no crunching, no grinding, feels intact. Frankly I'm lost and am more inclined to find someone locally than attempt a repair myself.
 
(quoted from post at 10:27:47 05/25/17) As I mentioned I am disabled and have not been able to get out for the last few days, plus we haven't had a day without heavy rain for four days, about 7 inches according to my gauge. But, The PTO shaft does not feel broken or damaged when I turn it by hand, it turns easily by hand with or without the PTO engaged, no crunching, no grinding, feels intact. Frankly I'm lost and am more inclined to find someone locally than attempt a repair myself.

If you can turn the PTO shaft by hand with the PTO engaged, then you have problems. You should not be able to turn it when engaged with the engine not running.
 
(quoted from post at 17:37:21 05/25/17)
(quoted from post at 10:27:47 05/25/17) As I mentioned I am disabled and have not been able to get out for the last few days, plus we haven't had a day without heavy rain for four days, about 7 inches according to my gauge. But, The PTO shaft does not feel broken or damaged when I turn it by hand, it turns easily by hand with or without the PTO engaged, no crunching, no grinding, feels intact. Frankly I'm lost and am more inclined to find someone locally than attempt a repair myself.

If you can turn the PTO shaft by hand with the PTO engaged, then you have problems. You should not be able to turn it when engaged with the engine not running.

unless he has really strong hands :idea:

Chief Superintendent Lookout[/url]"]Aha, the body! So, the murderer must be somebody in this room... unless, he had very long arms - say, thirty or forty feet. I think we can discard that one.
 
(quoted from post at 17:47:26 05/25/17)
(quoted from post at 17:37:21 05/25/17)
(quoted from post at 10:27:47 05/25/17) As I mentioned I am disabled and have not been able to get out for the last few days, plus we haven't had a day without heavy rain for four days, about 7 inches according to my gauge. But, The PTO shaft does not feel broken or damaged when I turn it by hand, it turns easily by hand with or without the PTO engaged, no crunching, no grinding, feels intact. Frankly I'm lost and am more inclined to find someone locally than attempt a repair myself.

If you can turn the PTO shaft by hand with the PTO engaged, then you have problems. You should not be able to turn it when engaged with the engine not running.

unless he has really strong hands :idea:

Chief Superintendent Lookout[/url]"]Aha, the body! So, the murderer must be somebody in this room... unless, he had very long arms - say, thirty or forty feet. I think we can discard that one.
/quote]

Put down the hookah and sloooowly step away from the stash.....

TOH
 

:lol: i would never use a hookah. i am militantly lazy, and i am told hookahs require cleaning (-:O
 

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