Gearbox constant pinion shaft bearing removal

["Gary Blake" <garyb@fast.co.za>]

Hello listers
I am trying to remove and replace the gearbox input shaft needle roller
force fit bearing (part # 118507) on my Spitfire Mk3 gearbox (same as
earlier Spitfires and Heralds). I have succeeded in removing the inner part
and the needle rollers but am left with the outer casing of the bearing
still inside the input shaft and I can't get it out.
How best can I remove this outer bearing casing without damaging the shaft?
Many thanks
Gary, Johannesburg ZA