When I need help with any repairs to my JD, I talk to the dealer parts
department. They are great and can supply diagrams and such from their
catalogues.
But the Service guy clearly didn't know how to remove the gear/
bushings. The guys at the parts counter said the would sell me parts
but Service guy is the one to tell me how.
www.weekendfreedommachines.com
That site is a good source of parts and manuals (at a price).