Hi MS,
You'll be bangin' away all day trying to get that bearing out if using that two wooden blocks method.
Generally you shouldn't apply shock or undue pressure on the centre race when wanting to reuse a bearing, but in the case of this type of bearing you have no choice but the design of this unit has all the pressure when the clutch is engaged on the curved section of the outer race.
Normally the correct tool to use is a spreadable 3 jaw head that slides inside the centre hole and has a slide hammer on it and thus you would then just evenly pull / knock it out.
If you slightly distort the flat side of that bearing one can skilfully tap it back into shape as that's not a running surface. To do that use the appropriate size 1/2 inch drive sockets that will come in contact all around the bearing surface and then use a soft blow plastic assembly hammer and progressively knock it back into shape how it should be.
As such over 40 odd years of working on these machines I've never had to replace one of these long life bearings with a new one.
Cheers,
BB.
