I just refered to one on ebay for the fast photo.
My limited understanding of pto's is that the gears must mesh with proper clearances or it will trash the box. Thus a pto box gears must mate with proper transmission via shims/gaskets/ or casting flanges/ bolt holes.
SEE this for modern applications;
http://www.pto-usa.com/ The floor board cut-outs are usually for a hand lever that often looks like a parking brake.
Example dump bed.... The PTO has a cable pull on the dash that engages/activates the PTO box; the PTO box then turns its' little drive shaft that eventually turns a hydraulic pump box; then the hand lever gets pulled to activate a hydraulic flow from the hydraulic pump to the hydraulic cylinder and thus raises/lowers a dump bed.
In short, PTO boxes turn their own little drive shaft....then ya "activate" whatever accessory hooks up to the little driveshaft.
Look in junk yards on the BIG Chevy/GMC trucks of the 1940s,50s,60, for a used PTO. They are very rugged units and are a good junk yard bet. Some big old dump trucks will even have directions on a dash decal telling how to work the PTO.
With the proper drive shaft and U-joint set up these things could power water pumps, wood cutters, well look at the old tractor sites and see all the stuff they used em' for....
http://www.ytmag.com/cgi-bin/boards.cgi {I often wondered if the WW2 Army Duck had its propeller driven off a PTO? I rode in one but it was slow and had a hard time ascending a steep shoreline. A little PTO propeller would look real cool on a stovebolt and definalty a useless converstaion piece!}
http://normandy.eb.com/normandy/articles/DUKW.html john
1952 coe
1947 coe
[ 12-03-2001: Message edited by: lil' johnny ]
