Re: PTO types

Posted by KEH on August 23, 2005 at 18:15:31 from (64.53.74.188):

In Reply to: PTO types posted by Jim in NH on August 23, 2005 at 17:01:34:

Jim,
Live power to me means a system like those in MF 35 up to the last year or two small-medium MFs. With the clutch all the way down, engage the PTO lever. The clutch is two stage. Let the clutch out half way and the PTO turns. Put transmission in gear, let clutch the rest of the way out, the tractor moves and the PTO continues to turn. Reverse process to stop tractor and implement. Clutch plate has a lining on both sides. Costs more to rebuild, but is simple and usually trouble free. Many other tractors have this system, which can be checked by depressing clutch pedal ans feeling the two stages with motor off.
Independent PTO means having a separate clutch pack operated by a separate lever. Oliver-Cockshutt were the first with this, I think, sometime in the 1940s. To engage PTO, simply move the separate lever. IMO this is MUCH better than live in most applications. Variations on this system include hydraulic clutch pack(Some JD, Ford 4000 up) and electric switch(which I assume is a solenoid switch)
A hybrid version is found on Fiat designed tractors (Long, some Olivers and Whites) In this system, a separate hand lever is used to operate the two faced clutch instead of a two stage foot clutch. Deutz used a variation of this system also.
Not qualified to discuss wet or dry clutchs. Hope this helps.

KEH

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