Hi Boschlover
I agree with fidos advice, I find that the claw side of a claw hammer also works for getting the seal out.
In terms of getting the front bearing out, I use a 16" or so long, inch wide bolster chisel ( as would be used for cutting bricks or channeling out a wall) and a 3kg club hammer, and provided you work around the edge of the bearing, where fido is suggesting the holes could be drilled, you should be able to drift it out. But from my experience of doing dozens of these, you do need a decent size hammer, an ordinary claw hammer isn't heavy enough.
When fitting the new bearing, obviously clean everything out, as well as the brass bush on the shaft of the drum spider. I then put the bearings in the freezer overnight, and carefully using an electric hot air gun warm the bearing housing in the tub, just to the point you cant touch it, not where you you start burning the plastic, the bearing should then practically fall into place with just the gentlelist of encouragement. I use a bearing size disc of plywood on the end of a 30cm length of 2" x 2" ( excuse the mixed units, I'm a carpenter lol) and just tap it home. same with the back bearing and the seal.
It may not be the traditional method, but I find its best to let expansion and contraction work for you and reduces the risk of damaging the new bearings .
But the best advice I would give is to look up previous threads, I think MatchboxPaul created one when we did just this repair on their 95620, a few years ago.
Well done on your work so far, without the correct socket spanner, getting the nut and pulley off isn't easy.
All the best, I find replacing bearings one of the most satisfying parts of a restoration, as the improvement in the sound when spinning is well worth the effort, as well as extending the life of the machine.
Let us know how you get on
Mathew