1964 4000 PTO Question

Farrenc · Apr 9, 2017

I've a 1964 Ford 4000 Diesel, 5-speed. Just spent several thousand dollars on it at a Ford (New Holland) dealer and I think they did something wrong but of course they don't. I don't have an identical tractor to check so I'm hoping someone here can prove or deny my concerns.

Among many other things, they were into the rear-end of it working on 3-point issues. Ever since it's come back from the shop, the PTO shaft has about 1/2 inch of play in and out and the PTO will jump out of gear at random times. If I rest my heel on the PTO lever to hold it in gear, I can feel the lever jumping constantly.

Prior to the trip to the shop, it never jumped out of gear and I don't recall the PTO shaft having any noticeable play in it. This is where I'm wishing for an identical tractor -- to see what the play is like. Maybe my memory is just bad....

Did they do something wrong, and if so, what's the most likely thing they could have done?

Thanks!

-Farren

Bern · Apr 9, 2017

1/2" of end play is way too much. 1/16th inch would be more normal.

I'd guess that something happened to #5 snap ring in the attached image:
PTO

Ultradog MN · Apr 10, 2017

Bern is correct.
It is most likely the circlip that holds
the pto shaft bearing in place.
However, you state that they "were into
the rear end working on 3-point issues."
To work on 3 point issues they most likely
removed the hydraulic lift cover and would
have no reason to touch or test the pto.
So at this point, given the the limited
info we have about what all was done I
would tend to side with the dealer and not
the customer.

Farrenc · Apr 10, 2017

I'm not looking to blame the dealer -- worded that too strongly. They did good work on the parts they did work on. But, I was wondering if it could have been an "accidentally forgotten part during reassembly" or if it was just coincidence that I noticed the end-play after the shop work. I forgot to mention that they also replaced the clutch -- the PTO clutch would slip when under a heavy load and the main clutch was sticking/grabbing. (Totally forgot about that part of the work until I was typing this up, sorry!)

So:

1) should I stop using the PTO until it's fixed? I assume damage is being done or could be done running it like it is.

2) is the end-play the reason it's popping the PTO out of gear?

3) How big of a job is it to get to that #5 snap ring and install one? Can it be accessed from the top or does it mean splitting the tractor?

-Farren

Ultradog MN · Apr 10, 2017

Yes, that is why the pto is poppung out of
vear.
On a scale of 1 to 10 with 1 being adding
air to your tires and 10 being a complete
overhaul of the transmission it's about a
2
Drain the oil from the rear end.
Remove 4 bolts that are in a square around
the pto housing and pull the pto shaft out
of the tractor.
Once out you will see what happened and
how to fix it.
What usually causes this failure is a
drive shaft on a mower being too long so
when you raise the 3 point the geometry
back there forces the pto into the tractor
and knocks the circlip out of the groove
it sits in.
Sometimes you have to install a new
circlip as the old one can be bent or
broken. New Holland might get all of a
couple bucks for a new one.
Ps,
Even installing a new clutch it is
possible they did not touch the pto shaft.

Farrenc · Apr 10, 2017

That's quite reassuring!

So, you're thinking the clip will still be on the shaft? If it's gone, do I need to go fishing for it so it doesn't get ground up in there?

I love this tractor, but in it's old age it's starting to get expensive! Just 2 days ago I had it on a mower giving it a good workout and it started leaking water out of the bottom of the radiator....

Thanks for the advice!

-Farren

Bern · Apr 10, 2017

New Holland could easily ask $10-15 for a $2 snap ring. I don't buy anything from NH unless I have no other choice. I'm not paying their mafia prices.

1964 4000 PTO Question

Farrenc

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Bern

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Ultradog MN

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Farrenc

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Ultradog MN

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Farrenc

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Bern

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