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Re: simple pto ?
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Posted by TimV on July 19, 2003 at 06:51:31 from (64.19.90.202):
In Reply to: simple pto ? posted by Michael on July 18, 2003 at 21:25:00:
Michael: Basically, PTO's come in three flavors. A traditional PTO, such as you'll find on many old tractors, works off the transmission, and uses the same clutch as the transmission. When you push the clutch to disengage the gears and stop the tractor, you also stop the PTO. The next development was the "live" pto, which often had a second clutch set on the same clutch pedal as the transmission. You could push the clutch in part way to stop the tractor, and then push it in further to stop the PTO. This is handy for such applications as baling and mowing, where you need to stop the tractor to let the implement catch up with a large wad of hay or something similar. Today, most tractors have an "independent" PTO, which is wholly separate from the clutch pedal--it has its own clutch, and can be stopped and started without regard to the forward progress of the tractor. Note that the terms "live" and "independant" PTO's are often used interchangeably, which may be technically incorrect, but basically is just saying that you can stop the tractor and the PTO will continue to function.
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