Anyone who has been down this road, knows that due to the recese that the lower bearing sits in, getting the outter race out, without access to heat or fancy, special pullers can be a soul destroying exersize.
Not having access to above mentioned luxuaries, some ingenuity was required.
1X Long, thin bolt (about 8mm diameter, and about 300mm long) I found the thin front engine mounting bolt works a charm.
2X nuts
1X washer ( you want about 5mm sticking out beyond the nuts).
Build tool as per drawing, and slide down the inside of the steering head, from the top, angle the bolt so the edge of the washer catches the bearing race and tap away at your leisure.
After some banging away, the washer tends to start bending over, and slipping off the bearing race.
Just undo the lower bolt and turn the washer around, and it grips keen again.
Took me about 10 minutes to remove the race.

Hope this helps.
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