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Tractor Talk Discussion Forum

What's Live PTO?

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Fast Freddie

12-15-2003 06:44:17

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I've seen ads for tractors that don't have "live PTO.What does that mean?Does live PTO run all the time and "non" live just when the tractor is moving or what?I'm confused.

Thanks!

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RAB

12-16-2003 08:48:23

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Re: What's Live PTO? in reply to Fast Freddie, 12-15-2003 06:44:17

If there is insufficient info posted here, try putting 'live pto' in the search faciliity at the top of the topic page. Will be enough reading to keep you going for a long time..... ...
Regards, RAB

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paul

12-15-2003 08:27:01

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Re: What's Live PTO? in reply to Fast Freddie, 12-15-2003 06:44:17

As the others say. Live pto lets you stop moving the tractor, shift gears, etc. while the pto continues to run. Independent pto is a little better version of Live pto, but either are good and some people interchange the terms.

On tractors without live pto, _any_ time you push in the clutch to stop moving the tractor, the pto also stops. So you can't clear slugs in a baler, corn picker, snow blower. Also as you start baling (etc.) you put the pto in gear & the tranny in gear. Let out the clutch & both start up at the same time - more stress on the tractor. One learns how to plan ahead & quick-shift to get around this, but a whole lot less fun.

There is a safety issue. A heavy fly-wheel type load like a brush hog is directly linked to your rear wheels on a non-live pto tractor. This flywheel effect will continue to move the tractor, even if you push in the clutch & use the brakes. You need to use an over running clutch on your pto shaft to be safe in such cases - allows the pto to freewheel in one direction. Live pto tractors have this built in.

--->Paul

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Indydirtfarmer

12-15-2003 06:55:36

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Re: What's Live PTO? in reply to Fast Freddie, 12-15-2003 06:44:17

Live PTO will continue to run under power, when you push the clutch in to disengage the transmission. It also lets the hydraulic pump stay under power at the same time. It is usually controlled by a "two-stage clutch". That is, the clutch pedal is pushed halfway down to disengage the transmission, and the rest of the way to disengage the PTO, and hydraulic pump. "Independant PTO" usually has a separate clutch, or control for the PTO, and the hydraulic pump operates seperately. Others might be able to explain this better, but that is the basics of Live PTO. John

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kraig WY

12-15-2003 06:46:35

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Re: What's Live PTO? in reply to Fast Freddie, 12-15-2003 06:44:17

A two stage clutch that allows the PTO to keep running when you engage the clutch to stop the tractor. A must for baling, it allows the baler to catch up.

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