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  1. #1
    Silver Member Surewhynot's Avatar
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    Kubota BX1500/L3240

    Default Drive tore in half

    My first use of an old cutter. Three point connected fine, chains were tight and the PTO attached fine...made two swaths and then the drive shaft tore in half? WTH? I know I can get a new drive shaft, but why? PTO speed was around 11 to 12. It was an older KingKutter and looked to be in good shape, and I greased it before use and the gearbox was full. Never had that happen before. Any thoughts?
    Surewhynot

    Kubota BX1500 54" Belly deck, and a L3240 HST,FEL, 3pt Blade,Cutter, Dirt Scoop, Pallet Forks, Woods HB-72" Box Blade

  2. #2
    Super Member Farmwithjunk's Avatar
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    Where do I begin.....

    Default Re: Drive tore in half

    Quote Originally Posted by Surewhynot
    My first use of an old cutter. Three point connected fine, chains were tight and the PTO attached fine...made two swaths and then the drive shaft tore in half? WTH? I know I can get a new drive shaft, but why? PTO speed was around 11 to 12. It was an older KingKutter and looked to be in good shape, and I greased it before use and the gearbox was full. Never had that happen before. Any thoughts?

    Define (or post picture(s)) "tore in half". Did a u-joint fail? Did the center section of the shaft itself fail? Broken yoke? How long had it been sitting idle?
    There are three kinds of men;
    1.) The ones that learn by reading
    2.) The few who learn by observation
    3.) The rest of them have to pee on the electric fence for themselves.

  3. #3
    Elite Member Baby Grand's Avatar
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    Windsor, CT.
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    L3240GST, B2320HST, B5100D & G5200H

    Default Re: Drive tore in half

    I got a lotta diagnostics questions:

    If your PTO shaft has a clutch, did you loosen the bolts and slip it before retorqueing and cutting? If it's a shear bolt, what grade bolt and what does it look like now? What were you cutting - grass, saplings, stumps?
    That's the problem with trouble.
    It always starts out as such fun."
    - Randall Brown

  4. #4
    Veteran Member
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    Ohio
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    Case DX55, Ford 850

    Default Re: Drive tore in half

    Until we see pics or have a better description it will be a guessing game. Here's my guess: Shaft was too short and over extended for the tractor, shear pin or slip clutch didn't release and the shaft twisted in two where it barely overlapped.

  5. #5
    Epic Contributor Bird's Avatar
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    Default Re: Drive tore in half

    Shaft was too short and over extended
    When he said "tore in half" that was my first thought; too short therefore not enough overlap in the middle.
    Bird

  6. #6
    Silver Member Surewhynot's Avatar
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    Kubota BX1500/L3240

    Default Re: Drive tore in half

    I wll buy too short a drive shaft. No damage to anything, just broke right in the middle of the shaft into two equal halfs. Guess it is off to TSC for a new shaft. This learn as you go stuff is expensive
    Surewhynot

    Kubota BX1500 54" Belly deck, and a L3240 HST,FEL, 3pt Blade,Cutter, Dirt Scoop, Pallet Forks, Woods HB-72" Box Blade

  7. #7
    Silver Member Surewhynot's Avatar
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    Kubota BX1500/L3240

    Default Re: Drive tore in half

    And thanks for the inputs, that was my guess as this was used on an old 8n before. I moved it as far in as the 3pt would allow, guess just not enough.
    Surewhynot

    Kubota BX1500 54" Belly deck, and a L3240 HST,FEL, 3pt Blade,Cutter, Dirt Scoop, Pallet Forks, Woods HB-72" Box Blade

  8. #8
    Veteran Member
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    Case DX55, Ford 850

    Default Re: Drive tore in half

    Quote Originally Posted by Surewhynot
    And thanks for the inputs, that was my guess as this was used on an old 8n before. I moved it as far in as the 3pt would allow, guess just not enough.
    Did it break in half, or just over extend and come apart into the 2 equal halves per design?

  9. #9
    Silver Member Surewhynot's Avatar
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    Kubota BX1500/L3240

    Default Re: Drive tore in half

    It would appear that it seperated, but the plastic guard casing ripped in two. As it was pointed out...too short of a drive shaft. I will get a larger one at Tractor Supply when I get the chance. I see they carry three different sizes.
    Surewhynot

    Kubota BX1500 54" Belly deck, and a L3240 HST,FEL, 3pt Blade,Cutter, Dirt Scoop, Pallet Forks, Woods HB-72" Box Blade

  10. #10
    Elite Member Ductape's Avatar
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    Central New Hampshire
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    Kubota B3030HSDC

    Default Re: Drive tore in half

    I believe you can buy a PTO extension much cheaper than a whole new shaft...... just leave the extension on that shaft if you won't need it for any other impliments.

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