IH 350 PTO

[frankpkp]

Hi all,

The PTO on the 350 Utility spins but can't handle any load. Had one guy saying maybe the bands(?). Anyone every rebuild one? Any idea on potential issue? can i remove the PTO, cover the hole and use the tractor and 3pt for plowing while i'm rebuilding it?

thanks in advance,

Frank

 

[Janicholson]

The linkage on well used PTOs on the utility series become dysfunctional after years of use.
Two suggestions:
Make very sure there is no lost motion in the hand lever pivot and rod mechanism. Be certain the hand lever moves the PTO lever
from the middle both ways.
Adjust it like this, after there is no play in links.
Move the lever exactly half way between the locked on position and locked off position (little flipper catch on lever.
Take off the little dome metal cover from the adjust screws.
Loosen the jamb nut, and tighten the front (away from you) screw until it is just a bit tighter than the point at which it begins
to feel tighter as it is screwed in (maybe a eighth turn) then back it off until the PTO shaft will turn with least drag (about
3/4 turn out) and tighten the lock nut while holding the adjuster.
Do the same for the closer adjuster.
If the screws go into the jamb nuts and get flush with the top surface of the nut, the bands are probably worn out, and may be
operational for a while, but plan on a rebuild.
Now (tractor off) push the the lever down toward the brake footplate. As it goes down, it should get harder to push when it is
about 4" (or so) away from fully OFF. and be noticeably harder to push for the last inch, but not real hard. (this is the brake
band tightening on the drum in the PTO unit.
Then pull it up and do the same feel.
The ON position should feel the same way.
The shaft should turn pretty free when the lever is half way, and not at all when in either ON, or OFF. (tractor shut off)
If it slips now, it needs a rebuild. JimN

 

[frankpkp]

Great information. i will try this if i can. The tractor shop put it on the dyno and it stopped right away. i have no way to check the power on it. is there a way I can have a conversation with you at some point through the process. I will PM you.

have you rebuilt one? what kind of job is that? and can it be done while still using the tractor for plowing?

thanks again
Frank

(quoted from post at 12:58:41 04/12/17) The linkage on well used PTOs on the utility series become dysfunctional after years of use.
Two suggestions:
Make very sure there is no lost motion in the hand lever pivot and rod mechanism. Be certain the hand lever moves the PTO lever
from the middle both ways.
Adjust it like this, after there is no play in links.
Move the lever exactly half way between the locked on position and locked off position (little flipper catch on lever.
Take off the little dome metal cover from the adjust screws.
Loosen the jamb nut, and tighten the front (away from you) screw until it is just a bit tighter than the point at which it begins
to feel tighter as it is screwed in (maybe a eighth turn) then back it off until the PTO shaft will turn with least drag (about
3/4 turn out) and tighten the lock nut while holding the adjuster.
Do the same for the closer adjuster.
If the screws go into the jamb nuts and get flush with the top surface of the nut, the bands are probably worn out, and may be
operational for a while, but plan on a rebuild.
Now (tractor off) push the the lever down toward the brake footplate. As it goes down, it should get harder to push when it is
about 4" (or so) away from fully OFF. and be noticeably harder to push for the last inch, but not real hard. (this is the brake
band tightening on the drum in the PTO unit.
Then pull it up and do the same feel.
The ON position should feel the same way.
The shaft should turn pretty free when the lever is half way, and not at all when in either ON, or OFF. (tractor shut off)
If it slips now, it needs a rebuild. JimN

 

[Janicholson]

I teach Classes every day. Email is best through the YT Email portal. The tractor can be used with a plate covering the hole.
The replacement of the bands (or relining the existing bands --Best--) is usually all that is needed. The planetary gear set inside
is usually just fine. If toast, a replacement PTO is the fix. Buy a repair Manual covering the system. Jim

 

[frankpkp]

Thanks Jim. I tried to find an email for you in the profile, but didn't see any and PM is turned off. I appreciate the help. i have both the shop manual and the owners manual. I've done work on the engine and few other areas, but never touched the PTO. i imagine i will lose the hydraulic fluid when i pull the PTO off and will need a plate that will be sealed for the new fluid.

Relining existing bands?

thanks again,
Frank

 

[Janicholson]

I forgot to open my email, it is now. Jim

 

[Janicholson]

second try. Jim