dwragon
10-31-2021 18:49:44
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Re: 460 pto ?'s in reply to dwragon, 10-31-2021 06:35:53
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Janicholson, I found this through gugle, has any info changed or would be specific to the 460?
350 dave 300U PTO adjustment ?? questions
Re: 350 Farmall PTO will not shut off, in reply by Janicholson, 10-18-2011 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.
I am not sure what you mean by "half way up to engage"
You will put it in the center of travel (possibly bungy it there)while doing the adjustment as described. As Dave pointed out all slop must be removed from the linkage (not by adjustment, but by fixing the looseness. Be careful with the Woodruff Key at the lever to shaft it is not fixed by tightening the nut, it is fixed by using a Dremel tool to make the pocket and slot bigger for a new key. No slop, not bigger is ok. Very precise. A machine shop can do the work. This post was edited by dwragon on 10/31/2021 at 06:50 pm.
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