I am looking at potentially buying an early (1958-59) Oliver 550 Diesel.  The current owner was brushhogging and hit a stump.  The action of hitting the stump broke the 550's PTO.  (I have not seen the tractor, so I don't know what damage was done other than the current owner saying the PTO no longer works.)  Any thoughts or ideas as to how much such damage would cost to fix (parts and labor - I am not a mechanic) and what other damage, if any, hitting the stump with the brushhog may have caused to the 550?

Thank you.

George