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  1. #1

    Join Date
    Feb 2001
    Posts
    5
    Location
    Columbus, Ohio
    Tractor
    New Holland TC40D

    Default Remove driveshaft on Rotary cutter

    First the confession. I raised the deck too far and bent the drive shaft. Now my problem is I can't get the (now worhtless) drive shaft off the rotary cutter (Woods XT172 6'). I removed the shear pin and the retaining ring and I can move the shaft with some "encouragement" from a hammer but the sleave comes forward to the edge of the cutter and stops. Does anyone have any ideas that don't involve explosives on how to get this thing off. I'm afraid the grass may start growing soon. Thanks.


  2. #2
    Veteran Member hayden's Avatar
    Join Date
    Sep 2000
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    1,709
    Location
    MA/VT
    Tractor
    Kubota L5740 cab + FEL, Cat D5G dozer, Kubota KX121 excavtor

    Default Re: Remove driveshaft on Rotary cutter

    I'm not following your description.

    I've seen shear bolts that hold two flanges together so they rotate together. If the bolt shears off then one flange spins and the other stands still. Is this the bolt you removed and is this where you are separating the shaft? If so, I'm not sure this is the joint to remove the drive shaft. I've never tried it so I just don't know.

    The more typical attachment point for a drive shaft is where teh yoke slides over teh input shaft to the gearbox. There is typically a key to lock the yoke and input shaft together, then a pinch bolt that goes throught he yoke and a grove in the input shaft to prevent the yoke from pulling off the end of the shaft. This pinch bolt is not a shear bolt. I think this is the right way to remove the shaft.

    Peter


  3. #3
    Gold Member TraderMark's Avatar
    Join Date
    Feb 2001
    Posts
    367
    Location
    Southeast Georgia
    Tractor
    Ford 1720

    Default Re: Remove driveshaft on Rotary cutter

    MikeNH
    Your problem is, the end of the shaft is swollen. Take a file.... and .... this is going to take you a while... but file the area from the snapring groove out to the end of the shaft. Or... if you have a small grinder, you may be able to turn the ujoints at an angle that will let you get to the shaft, or at least part of it with the grinder, but be careful. The snapring is there to keep the yoke on the shaft when the shear pin gets sheared so the driveshaft can't go flopping all over the place and wreak havoc.


  4. #4
    Veteran Member
    Join Date
    Sep 2000
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    1,371

    Default Re: Remove driveshaft on Rotary cutter

    Mike,

    I didn't follow the configuration info. very well but,

    <font color=blue>I can't get the (now worthless) drive shaft off the rotary cutter</font color=blue>

    If it is truly toast,have you considered cutting the shaft in two? This may give you some advantage.


  5. #5

    Join Date
    Feb 2001
    Posts
    5
    Location
    Columbus, Ohio
    Tractor
    New Holland TC40D

    Default Re: Remove driveshaft on Rotary cutter

    I didn't mention in the first message, but I think I've spent more time reading this site than on the tractor. It is by far the most useful source of information I have been able to find. Thanks to all for the helpful posts!!!

    Sorry about the description of the problem, I haven't got all the terminology down yet. Let me try again in more detail. There is a u-joint at the end of the drive shaft (? that's what I'm calling the long shaft with the plastic covering that connects on one end to the PTO on the tractor and the other to the rotary cutter ?). The u-joint slides onto the input shaft to the gearbox of the rotary cutter. A key ring is then placed on the input shaft to prevent the u-joint from sliding back off. The shear bolt then goes through the u-joint and the input shaft. With the shear bolt and key ring removed I can get the u-joint to the edge of the input shaft and it stops. The filling idea may work, I'll try that this weekend. Assuming the problem is swelling of the input shaft is there some kind of preventive maintenance I can do to prevent it in the future?

    Thanks again.


  6. #6
    Epic Contributor Bird's Avatar
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    Mar 2000
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    37,521
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    Texas

    Default Re: Remove driveshaft on Rotary cutter

    Mike, I understand the problem, but haven't personally run into that. I suspect TraderMark's suggestion would work, but also wonder whether you couldn't use a gear puller to pull it on off.

    Bird

  7. #7

    Join Date
    Feb 2001
    Posts
    5
    Location
    Columbus, Ohio
    Tractor
    New Holland TC40D

    Default Re: Remove driveshaft on Rotary cutter

    Possibly, but I don't have one (yet).


  8. #8
    Epic Contributor Bird's Avatar
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    Mar 2000
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    37,521
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    Texas

    Default Re: Remove driveshaft on Rotary cutter

    If I didn't have a gear puller, I think I might be tempted to try chaining the implement to a big tree, then a chain from the bad driveshaft to the tractor and pull.

    Bird

  9. #9

    Join Date
    Feb 2001
    Posts
    5
    Location
    Columbus, Ohio
    Tractor
    New Holland TC40D

    Default Re: Remove driveshaft on Rotary cutter

    My big trees (and other immovable objects) are surronded by a lot of mud. Of course cleaning up the mess I'd make could be fun (and good practice).


  10. #10
    Veteran Member
    Advertiser

    Join Date
    Apr 2000
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    1,589
    Location
    Western New York
    Tractor
    Kubota B2710

    Default Re: Remove driveshaft on Rotary cutter

    How about a little heat on the outside to expand it that little bit that it needs!


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