Its easy as if all you want to do is remove the rods. Remove both PV covers. Disconnect the arm, Pull out the RHS bearing, Push the rod out the other side.
Getting the flapper out in situ is a pain though as you don't have much room to work. Removing the head can make things easier, but in general still a bit of work jiggling it just the right way. If you leave it sitting there though it'll be pretty easy to check the parts and then slide the rods back through.