The process for replacing a broken shift fork is as follows:
1) Split tractor between the rear differential and the transmission.
2) Remove the steering column
3) Inside the transmission loosen the nut that holds the shifting fork to the shift fork.
4) At the back of the trans remove the nut that holds the shift fork rail.
5) Slide the shift fork rail back.
6) Install new shift for and put slide back in.
I have a reverse shift fork in stock for 45.00 shipped. 802---------