If you pull the crank pinion off the put the case and crank in the oven the bearing usually comes out with the crank, at least it does on mine. It helps to be unmarried before trying this procedure or it can result in serious injury and a large financial penalty.
If it's in the Touratech catalogue then you don't need it
"You've got to think for yourselves! You're all individuals!"-Brian of Nazareth