I learned today that I have an over-riding clutch on the PTO of my '55 640. (Up til now, pathetic newbie that I am, I thought it was an adapter from the smaller PTO to the larger size.)
A friend dropped by and said I needed it to keep bush hogs and the like from forcing the tractor forward until the implement spins down. I thought that was only true while the tractor was in gear. If the 640 is in neutral, it's not a problem, right?
I don't own a bush hog, but I'm getting ready to run my new PTO chipper and will, of course, only run it in neutral. So I guess my other two questions are:
Is there any advantage to keeping the ORC on the tractor?
Could it prevent the shaft from being damaged if the chipper binds or would the belts on the chipper slip first?
As usual, many thanks in advance.