Re: Tips needed on buying older tractor for brush

Posted by Indydirtfarmer on September 21, 2004 at 07:15:10 from (66.83.236.250):

In Reply to: Re: Tips needed on buying older tractor for brush posted by Joe Bard on September 21, 2004 at 06:17:03:

Old tractors had Power take-offs that fed through the transmission. The same clutch that fed the transmission would disengage engine power from the PTO (and the hydraulics in most cases) Anything connected to the PTO that had a "flywheel effect" such as a bush hog, would continue to turn the transmission, even with the clutch disengaged, pushing the tractor along. The over-riding "clutch" was the only cure for that.
Live power was developed to remedy the situation. The clutch is a two-stage affair. Push it halfway down, and you disengage the transmission. Push it the rest of the way, and you disengage the PTO. Live Hydraulics USUALLY ran continuously, with no effects from the clutch.
Independent PTO's have no "connection" from the drive clutch. They USUALLY have their own (USUALLY HYDRAULICLY CONTROLLED) "clutch" to engage or dis-engage it.
I hope that explains it enough. John

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