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  1. #1
    Silver Member
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    Oct 2009
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    234

    Default Live vs. Non-Live PTO Question.......

    When a clutch on a non-live PTO tractor is pushed in the PTO stops spinning and the implement ceases to turn/run, yes?

    If that is the case, does that still happen if the PTO is still in gear?

    The tractor specifically is a M-F 150

  2. #2
    Gold Member Sandlot's Avatar
    Join Date
    Aug 2006
    Posts
    281
    Location
    CA. High Desert
    Tractor
    Kioti CK20(Gear)

    Default Re: Live vs. Non-Live PTO Question.......

    On my tractor while using my post hole digger, I push in the clutch, shift the pto into gear. I leave the tractor in neutral, slowly release the clutch and the digger starts to spin. Push in to the clutch the post hole digger stops.
    Kioti, CK20(Gear), Loader, Backhoe, Box Scraper, and Post Hole Digger.

  3. #3
    Veteran Member magicheater's Avatar
    Join Date
    Jul 2009
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    1,668
    Location
    central Wisconsin
    Tractor
    Kubota B7800, B26 TLB

    Default Re: Live vs. Non-Live PTO Question.......

    Quote Originally Posted by robertwhite View Post
    When a clutch on a non-live PTO tractor is pushed in the PTO stops spinning and the implement ceases to turn/run, yes?

    If that is the case, does that still happen if the PTO is still in gear?

    The tractor specifically is a M-F 150
    yes, power is removed, the spinning stopped is not immediate in all cases.

  4. #4
    Veteran Member easygo's Avatar
    Join Date
    Mar 2007
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    1,402
    Location
    Eddington, Maine
    Tractor
    Kubota B7800

    Default Re: Live vs. Non-Live PTO Question.......

    On live PTO when the clutch is pressed it disengages the connection with the engine and no more power is going to the implement. In the case of relatively high RPM attachments like rotary cutters, chippers ect. the blades keep spinning for a while given their momentum but will eventually stop. On the independent PTO there is another kind of arrangement that disengages the drive from the PTO independent from the position of the clutch.
    It's the going that counts not the distance!

  5. #5
    Silver Member
    Join Date
    Mar 2008
    Posts
    186

    Default Re: Live vs. Non-Live PTO Question.......

    On a non live pto "transmission pto" the pto will stop when you disengage the clutch. You have to disengage the clutch to turn the pto on and off.

    On a live pto you can push the clutch in partially to disengage the transmission but the pto keeps running. When you push the clutch in all the way then the pto stops. You have to have the clutch in all the way to turn the pto on or off. This lets you reverse with a mower running and other implements.

    On a independent pto you have a button, lever or some other control and you can turn the pto on off at will with the clutch in or out.

    If you are running an implement with lots of centrifugal force such as a rotary mower than the pto might keep spinning until the implement stops.

  6. #6
    Super Star Member RoyJackson's Avatar
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    Nov 2001
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    18,455
    Location
    Bethel, Vermont
    Tractor
    John Deere 4400 MFWD, Deere 855D UTV and assorted implements

    Default Re: Live vs. Non-Live PTO Question.......

    Quote Originally Posted by Sportsman762 View Post
    On a live PTO you can push the clutch in partially to disengage the transmission but the PTO keeps running. When you push the clutch in all the way then the PTO stops. You have to have the clutch in all the way to turn the PTO on or off. This lets you reverse with a mower running and other implements.
    Which is referring to those tractors with a two-stage clutch, of course.
    Roy Jackson

    "Any government that does not trust its citizens with firearms is either a tyranny, or planning to become one."
    -Joseph P. Martino

  7. #7
    Gold Member
    Join Date
    Nov 2009
    Posts
    264
    Location
    Freeland, MD
    Tractor
    706 IH, 1066 IH, and 301A JD

    Default Re: Live vs. Non-Live PTO Question.......

    There are basically 3 types of PTO:

    Independent has its own cluth completely seperate from the motion of the the tractor. You can turn it on and off with out doing anything with the foot clutch or motion of the tractor.

    Live PTO has a two stage clutch. Depress the clutch pedal completely and the trans can be put in gear and the PTO lever moved to engage PTO. The first little bit that the clutch come up will get the pto spinning with out moving the tractor. Then the transmission will start turning as the second stage of the clutch is engaged. This type PTO allows you to get the implement spinning before the tractor starts moving. To disengage, the clutch needs completely pushed in, for power to stop going to the implement. The motion of the tractor can be stopped without stopping the PTO.

    The original or transmission PTO on tractors like old H's or 8N Fords was completely tied to the movement of the tractor. These tractors have a single stage clutch, and the PTO is completely tied to the motion of the transmission. Engage PTO and put tractor in gear and they both start moving and spinning at the same time. Not the best thing for say running a mower since you cannot get it started before you start moving. This PTO can be used with the transmission in neutral if you need stationary power, but you have to work the foot clutch to turn it on and off.

  8. #8
    Elite Member whistlepig's Avatar
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    Jan 2009
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    4,166
    Location
    Preble County, Ohio
    Tractor
    Kubota B7800 with FEL

    Default Re: Live vs. Non-Live PTO Question.......

    On a non live PTO when the tractor clutch is pushed in the the tractor will still keep moving forward until the implement ( like a rotary cutter) quits spinning. The implement will push the tractor right over a cliff. The only way to prevent this is an over running clutch attached to the PTO shaft. A non live PTO isn't much fun to mow with.

  9. #9
    Silver Member
    Join Date
    Oct 2009
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    234

    Default Re: Live vs. Non-Live PTO Question.......

    Mowing is the exact intention of this tractor so I will not even look at non-live PTO (unless it is independent).

    Thanks guys.

  10. #10
    Super Star Member
    Join Date
    Aug 2001
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    11,740
    Location
    Upper Midwest USA
    Tractor
    JD 4300, JD X485 JD 4x2 Gator, JD 425, JD455

    Default Re: Live vs. Non-Live PTO Question.......

    Quote Originally Posted by robertwhite View Post
    Mowing is the exact intention of this tractor so I will not even look at non-live PTO (unless it is independent).

    Thanks guys.
    Prolly a good decision.
    But of all the attempts to answer your original question, whistlepig nailed it for you.

    The rest, however, give additional information that is usable.

    But PTO powered equipment was successfully operated for many years without live power and it isn't the worse thing that can happen. When stopping, can always shift into neutral and let the rotary cutter spin down on its own momentum. If wanting to shut the rotary cutter down quickly (as in an emergency), then push in the clutch and put on the brakes to stop the PTO and tranny. The over-running clutch on the PTO is a good addition, as mentioned.

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