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Re: Re: Re: Re: Live PTO
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Posted by paul on June 30, 2002 at 21:56:09 from (209.23.145.80):
In Reply to: Re: Re: Re: Live PTO posted by Gordon Butcher on June 30, 2002 at 18:51:59:
True live pto has it's own clutch, and can be
turned on or off at any time, regardless if you
are in a gear or out of gear, tranny clutch in or
out - whatever. My IHC 300 & Oliver Super 77
have this. Ford came up with the double clutch which is
called a live pto. It is sort of in between
actually. You can push the clutch 1/2 way
down & it stops the pto, or you can put the pto
in gear. (It does not matter what gear the
tractor is in, or neutral.) However to stop the
tractor moving if in gear, or to shift gears you
have to push the clutch all the way down, thus
stopping the pto on the way. My Ford 960 has
this. Tractors without live pto have only 1 clutch,
and when you push it in, both the pto and any
tranny gear is stopped. To shift either the pto
or the tranny on/off you need to stop both. My
Farmall H is like this. It also does not have live
hydraulics. It is of course my loader tractor,
and a real pain. I cannot raise the bucket with
the clutch pushed in. So lots of shifting into
neutral to adjust the bucket hieght... Non-live pto can come from the front of the
tranny & run at 1 normal speed; They can
come from behind the tranny & run faster or
slower depending on what gear you are in; Or
some tractors have both. So for example, when you are baling with a
non-live pto and you come to a wad of hay too
thick for the baler, you have to push in the
clutch - and the pto stops also & the baler,
probably plugging. Shift to neutral, get the
baler rocked up to speed to clear the plug,
then push in the clutch (slowing the baler) and
quickly shift into gear & take off again, jerking
the baler back to speed at the same time you
jerk ahead. (Notice both the pto load &
movement load are placed on the tractor at the
same time.) With my IHC 300, I can drive up to the
windrows in 4th gear, shift down to 1st with my
left hand while putting the pto in gear with my
right, and be baling without even coming to a
complete stop. Any thick wads of hay, push in
the clutch, the pto & baler keep running to
clear things out, ride the clutch a bit, and the
person on the rack hardly notices the
slowdown.... Non-live pto tractors are also dangerous with
big flywheel-type implements like brush hogs.
Since the pto & the rear wheels are locked
together, when you push in the clutch to
running brush hog will keep the rear wheels
moving - possibly for many feet! You need an
Over Running Clutch to operate these types of
loads safely on a non-live pto tractor. --->Paul
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