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  1. #1
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    john deere gp

    Default tc 18 pto shaft wont turn

    i was tilling with my tc 18 and tiller stopped turning if u lift the tiller up it turns but when you put it down on the ground it stops turning something inside of the tractor went bad any ideas.

  2. #2
    Epic Contributor jinman's Avatar
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    Default Re: tc 18 pto shaft wont turn

    Are you sure your tiller's PTO clutch is not slipping? That's the way mine acts when I have the clutch adjusted too loose.
    Jim


  3. #3
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    Default Re: tc 18 pto shaft wont turn

    no its not the pto clutch . its something inside the tractor

  4. #4
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    Default Re: tc 18 pto shaft wont turn

    Quote Originally Posted by chevyflan View Post
    no its not the pto clutch . its something inside the tractor
    So when you put the tiller into the ground the PTO shaft going from the tractor to the tiller stops turning, or is it just the tiller tines that stop turning?

    Aaron Z
    A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects.
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  5. #5
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    Default Re: tc 18 pto shaft wont turn

    the pto shaft stops turning

  6. #6
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    Default Re: tc 18 pto shaft wont turn

    Something inside is probbaly unhappy then. Looks like that has a hydraulic clutch pack to run the PTO. Those can get spendy in a hurry.

    Aaron Z
    A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects.
    Robert Heinlein, Time Enough for Love

  7. #7
    Epic Contributor jinman's Avatar
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    Default Re: tc 18 pto shaft wont turn

    Quote Originally Posted by aczlan View Post
    Something inside is probbaly unhappy then. Looks like that has a hydraulic clutch pack to run the PTO. Those can get spendy in a hurry.

    Aaron Z
    Aaron, I can't find anything that shows a PTO clutch/brake on the TC18. It looks to me like it is completely gear driven and the tractor's clutch is the only clutch in the driveline. I suspect the PTO is not being fully engaged and is popping out of gear due to a worn gear or misadjusted engagement lever. If the tractor's clutch was slipping, the tractor would not move either.

    Chevyflan: Do you hear any popping or grinding when the PTO disengages? Have you checked the PTO operation on anything other than the tiller (for example, a rotary cutter)? Do you also have a mid-PTO? Does it work properly?

    BTW: The gear transmission looks like it may have a built-in over-run clutch (ratchet) in the transmission, but that is not a hydraulic clutch. It just allows the PTO shaft to continue turning after the lever is disengaged and useful for rotary cutters that have to spin down.
    Last edited by jinman; 05-02-2013 at 10:37 AM.
    Jim


  8. #8
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    Default Re: tc 18 pto shaft wont turn

    Quote Originally Posted by jinman View Post
    Aaron, I can't find anything that shows a PTO clutch/brake on the TC18. It looks to me like it is completely gear driven and the tractor's clutch is the only clutch in the driveline. I suspect the PTO is not being fully engaged and is popping out of gear due to a worn gear or misadjusted engagement lever. If the tractor's clutch was slipping, the tractor would not move either.
    I stand corrected. I looked it up on Tractordata and misread it as having an independent PTO vs a live PTO.
    Looks like there are some exploded parts diagrams at: New Holland TC18 Transmission/PTO


    Aaron Z
    A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects.
    Robert Heinlein, Time Enough for Love

  9. #9
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    john deere gp

    Default Re: tc 18 pto shaft wont turn

    pulled the pto shaft out of the back of the tractor today and on the shaft is a bearing clutch which was bad not much to it but a new one is $238. thanks for all the advice.

  10. #10
    Epic Contributor jinman's Avatar
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    Default Re: tc 18 pto shaft wont turn

    Great job! Is your tractor the gear model? It's funny that the parts list called that a bearing when it looked just like an internal over-run clutch to me.
    Jim


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