so i first needed to knock the flange out o the centre of the hub with a suitable sized socket and a big hammer
to knock this

out of the centre of this

then remove two of these out of the hub to get the remnants of the wheel bearing out

then press the remaining wheelbearing out, (conveniently an old brake disk has the right size hole for the wheel bearing to pass through when using a press)

so your left with this

once sand blasted

then reinsert the flange side circlip and using the old wheel bearing as a drift press the new wheel bearing in the same way.

and reinsert the other circlip behind it.
next you will still have the flange with a bit of wheel bearing stuck on it. there are proper wheel bearing puller devices but i prfer the grinder as its free and to hand. gently though mind!

then clean it up and press it back into the bearing in the hub

with a nice lick o paint its as good as new.
