PTO spinning

[Brockport Bill 1,668]

 314 h with Kohler --- the PTO pulley still spins after engine is turned off -- for about 15-20 seconds - whats the problem and whats the fix? thanks

[Jeff-C175 7,202]

1 hour ago, Brockport Bill said:

still spins

 

First thing to look at is the PTO brake.  Facing he PTO it's the little bracket held with two bolts at the upper left.

 

Engage the PTO, loosen the two bolts and put an .015 feeler gauge between the pad and the pulley, push the brake against the feeler and tighten the bolts.

 

Your brake pad might be worn too...

 

And don't expect miracles, it's a marginal design IMHO. It barely does what it's supposed to do.

Edited January 22, 2022 by Jeff-C175

[kpinnc 12,083]

I say let it spin. It won't hurt anything.

 

The PTO brake is good for preventing you from applying grease periodically to the bearings, because it's a pain to remove and reset each time you service the tractor. At least that's why I don't use them.

 

If you use the tractor for anything else seasonally like a deck or tiller, the belt tension will keep it from spinning then. Otherwise it will be fine.

[grinchsr 627]

I guess you can rate the quality of the bearing lube by counting the revolutions of the PTO bell after the engine has stopped.  

[peter lena 8,634]

@kpinnc  agree on that , broken record , lucas , x tra heavy duty grease in that needle bearing , no noise , no failure , no problem , pete

[Horse Newbie 7,074]

On my 1994 520H, my PTO continues to spin for about 15-20 seconds also… never thought that much about it.

Unless I’m looking at it wrong, the brake ends up really just keeping the PTO a little farther on the shaft, keeping it from sliding out towards to the hoop, and closer towards the engine.

[oldlineman 1,481]

It is supposed to keep the PTO bell from spinning when there is not an implement attached. As Jeff has stated and in my 40 plus years of having these tractors it is a marginal design, won't hurt to spin at all. Also in cold weather the grease is a little thicker in the cage bearing and can overcome the friction of the bell brake. Bob

Edited January 22, 2022 by oldlineman

[8ntruck 7,016]

There is supposed to be a brake on the pto???

[Jeff-C175 7,202]

If ya think about it a bit...  when the PTO is spinning without a load, there is very little movement of the roller bearing because it's spinning with the shaft and no load... and there's no load on the end bearing... and it's not giving the clutch plate a vigorous rubdown...

 

So letting it spin when not in use is probably EXTENDING the life of those components!

 

[peter lena 8,634]

@ BROCKPORT BILL , @JEFF-C175,  agree with jeff  on the minimal design set up , having never replaced a clutch disc , and gently engaging it , is a no brainer for me . just letting that set up spin quietly  , is good to me , pete

 

[wallfish 17,011]

13 hours ago, kpinnc said:

The PTO brake is good for preventing you from applying grease periodically to the bearings, because it's a pain to remove and reset each time you service the tractor. At least that's why I don't use them.

Exactly

If the extra spinning is bothering you just engage the PTO and it will stop with the engine

[Handy Don 12,235]

3 hours ago, Jeff-C175 said:

If ya think about it a bit...  when the PTO is spinning without a load, there is very little movement of the roller bearing because it's spinning with the shaft and no load... and there's no load on the end bearing... and it's not giving the clutch plate a vigorous rubdown...

 

So letting it spin when not in use is probably EXTENDING the life of those components!

 

Agree, but the thrust bearing IS spinning, right?

[kpinnc 12,083]

1 hour ago, Handy Don said:

Agree, but the thrust bearing IS spinning, right?

 

The small needle bearing in the end of the bell spins anytime the engine does. Engaged or not, same thing.

 

That one is actually the one that fails, and needs lube when possible. I pull the seal on that one from the outside often and grease it. 

[Jeff-C175 7,202]

1 hour ago, Handy Don said:

thrust bearing

 

If you mean the one at the end with the stub axle, yes, it is spinning, but there's no load on it if the PTO is disengaged, so it's minimal stress.

 

11 minutes ago, kpinnc said:

needle bearing in the end of the bell

 

Not a needle, the internal one is a needle, the visible one is a regular caged ball bearing.

 

[kpinnc 12,083]

Just now, Jeff-C175 said:

Not a needle, the internal one is a needle, the visible one is a regular caged ball bearing.

 

 

You're right. What was I thinking...

 

Still needs lube. The seal keeps it dry no matter how much grease goes on the big needle bearing.

[Jeff-C175 7,202]

3 minutes ago, kpinnc said:

Still needs lube.

 

Abbie So Lutely !  (hey Pete!) 

 

I just replaced the bearings on my 'new to me' and the inner needle was 'just OK', not great, but serviceable for a few more years, new anyway.

The outer?  A mess.  It appeared to be the original bearing, forty years old, and nearly dry as a bone inside.  Very noisy and rough turning.

 

Edited January 22, 2022 by Jeff-C175

[Wheelhorse#1 1,667]

I’ve seen the PTO breaks.Might appreciate it if you ever get close to running over something.I guess

Edited January 22, 2022 by Wheelhorse#1