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  1. #1
    New Member
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    Jan 2013
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    Winchester, IN
    Tractor
    MF 1250

    Default Removing PTO shaft on MF-1250

    My PTO shaft wobbles just a bit. Dad didn't completely disconnect the rotary mower and ended up backing over half the PTO shaft last summer. I think the PTO output is bent on the tractor, so I'm trying to remove it.

    It looks like it's held in with a snap ring and a pressed in bearing. Should I be able to pull the whole shaft and bearing out with a slide hammer all at once? Do I need to take that snap ring off (I've tried, and failed...). I removed the two bolts that hold in the bearing and have yanked as hard as I can with a slide hammer attached to the shaft with a chain.

    -2013-01-19_14-58-34_910-a-2013-01-19_14-58-12_551-a

    Joe

  2. #2
    Gold Member
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    Jan 2012
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    341
    Location
    Winchester Ky
    Tractor
    Allis Chalmers ED 40

    Default Re: Removing PTO shaft on MF-1250

    Remove the chain, pry the shaft seal out and remove the internal snap ring. The shaft and bearing should then come out with the slide hammer. Looks like a fun project to put back though. The sliding gear will have to be held in place on the shift fork while the new shaft is put back into place.

  3. #3
    New Member
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    Winchester, IN
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    MF 1250

    Default Re: Removing PTO shaft on MF-1250

    Shoot! I didn't notice that snap ring behind the seal in the parts diagram. Too bad the seal is $81. Thanks!

    Quote Originally Posted by Harry in Ky View Post
    Remove the chain, pry the shaft seal out and remove the internal snap ring.

  4. #4
    New Member
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    Winchester, IN
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    MF 1250

    Default Re: Removing PTO shaft on MF-1250

    Excellent! Thanks.

    Didn't require the slide hammer at all. The bearing towards the front of the tractor wasn't even pressed in tight. This is a heck of a lot easier to work on than the junk cars I normally work on, but the parts cost 5-20X as much as 20 year old Accord parts (24 hours of Lemons).

    I think this shaft is bent less than 1/8". I can see a wobble, but not bad enough to stop from mowing about 5 acres last fall. Any opinion on having a shop straighten it versus buying a new one ($236)? I'll have to buy a new seal ($81) and I will replace the bearing ($11).

    -2013-01-20_13-33-59_285-a

  5. #5
    Veteran Member jimmysisson's Avatar
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    Jul 2005
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    1,616
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    W.Mass
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    1993 NH 2120 (the best), 1974 MF 135 (sold, but solid), 1947 Farmall A (bought, sold, bought back, sold again), 1956 MH50 lbt (sold, in 1980, darn it)

    Default Re: Removing PTO shaft on MF-1250

    I wouldn't think a shop would have much luck with straightening. With enough power they might straighten it but I would think that hardened steel might fracture. 'Course it didn't when it was damaged (maybe) so I think it's worth a try. By the time you find out, you'll be good at replacing the seal and shaft!
    Jim
    "Anything worth doing is worth doing slowly" Mae West

  6. #6
    Veteran Member jimmysisson's Avatar
    Join Date
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    1,616
    Location
    W.Mass
    Tractor
    1993 NH 2120 (the best), 1974 MF 135 (sold, but solid), 1947 Farmall A (bought, sold, bought back, sold again), 1956 MH50 lbt (sold, in 1980, darn it)

    Default Re: Removing PTO shaft on MF-1250

    I wouldn't think a shop would have much luck with straightening. With enough power they might straighten it but I would think that hardened steel might fracture. 'Course it didn't when it was damaged (maybe) so I think it's worth a try. By the time you find out, you'll be good at replacing the seal and shaft!
    Jim
    "Anything worth doing is worth doing slowly" Mae West

  7. #7

    Default Re: Removing PTO shaft on MF-1250

    Quote Originally Posted by Joe Batt View Post
    Excellent! Thanks.

    Didn't require the slide hammer at all. The bearing towards the front of the tractor wasn't even pressed in tight. This is a heck of a lot easier to work on than the junk cars I normally work on, but the parts cost 5-20X as much as 20 year old Accord parts (24 hours of Lemons).

    I think this shaft is bent less than 1/8". I can see a wobble, but not bad enough to stop from mowing about 5 acres last fall. Any opinion on having a shop straighten it versus buying a new one ($236)? I'll have to buy a new seal ($81) and I will replace the bearing ($11).

    -2013-01-20_13-33-59_285-a

    Hi. I have a 1250 with a leaking PTO shaft seel. Do you know if this part number is correct? 3703965m91 I need to replace it and I can't seem to get the part number from the local dealer. Thanks Don

  8. #8
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    Winchester, IN
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    MF 1250

    Default Re: Removing PTO shaft on MF-1250

    Yep. That's it.

  9. #9

    Default Re: Removing PTO shaft on MF-1250

    Joe, Any special tips for to getting that seal off (or back in)? I only plan on taking that one out. Thanks, Don

  10. #10
    New Member
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    MF 1250

    Default Re: Removing PTO shaft on MF-1250

    Nope. I really didn't know what I was doing. I tapped it in gently with a block of wood and a hammer, trying to keep it as square as possible.

    I still screwed it up. The spring in the seal got caught and pulled off. It doesn't leak yet and it has about 12 hours of mowing on it.

    Joe

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