NF PTO adjustment question
 

First time rebuilding a narrow frame PTO clutch, the type with the single pressure spring. My question has to do with correctly using the adjustment tool. I understand the ends are suppose to contact the recessed part of the pulley when the finger bolt is tightened correctly. But what is the middle part of the tool suppose to be touching? Should it be touching the thrust button or are those two little fingers supose to be touching the pressure spring? Thanks for your help

My experience has taught me that a little at a time is best. The gauge
will rest on the thrust button and then on the recessed part of the clutch.
Not on the spring. https://s3.us-east-2.amazonaws.com/c...ervice+Man.pdf. You might have the manual already
by page 2-69 starts PTO stuff.
It is real easy to overdue tightening and mess up the spring,
When you get it close I would put it back on the tractor and test it. No
need to put all the set screws back in just to test it. Keep tightening a
little at a time till you get it. Then put your set screws in.
Super easy to overdue the tightening on arm that pushes in the thrust
button as well. This well ruin the button that is on the engage lever on the
tractor. Sneak up on it easy.

Ken

very good advice. West Valley G

Perfect, thank you for that information! When adjusting the engagement arm the book says to have 1/64" clearance between the buttons. Is that too close or is that where i need to have it?

I think you could make sure the buttons just BARELY touch when the
PTO is disengaged. ( Lever toward the operator). If this does not disengage
the PTO, tighten turnbuckle slightly. Maybe 1/8 or 1/4 turn max. Try
again. Keep doing this till PTO disengages correctly. If you get carried
away and over tighten the turnbuckle you will ruin the spring or grind off
the buttons. I am a master at the grinding off the button thing. :biggrin2:

Ken

Excellent info, thank you again! I think what you've told me will work out so much better than what I've done so far. Ruined my pressure spring and friction disk on my first attempt before coming here and asking for help.

Don't be afraid to come here for help,and a picture is very helpful also.There is tremendous amount of knowledge here.And the guys are eager to help.And the sponsors sell the good parts,not the might fit and work.

I understand the ruined things. Slow and steady wins the race. Good luck
let us know how you make out.

Ken

It does rest on the spring, not the button.

My vote is for the button. As you evenly tighten the screws the button gets pulled down and the ends of the gauge will eventually contact the body of the pulley.

Done it about 200+ times the gauge does not hit the button. would you like a picture?

Yes, that would be kind of you. Thanks in advance.

Darkminion 17 is spot on. I,ve personally done 50 to 60 who counts. after 50 some years getting the PTO screws out & off the bearing is always a miracle in the making.

Here you go, those two pointy thingies leave scratches on the spring and sounds like a little birdie when you wiggle it side to side so you know it is touching it, none if you made it too tight. Also using the right gauge helps also.

I misunderstood what you meant when you previously said "rest on the spring". Thanks for explaining