Hi Steve,
The 2 front wheel bearings are mounted on a sleeve - this sleeve has a special nut with 4 holes for a peg spanner on the brakedrum end. The other end of the sleeve has a head with either 2 flats or a hexagon - beware when undoing the nut, it has a LH thread!! With the nut removed, the sleeve usually slides easily out of the bearings. With the sleeve removed, the bearings can then be drifted out of the hub without any further dismantling.
Regards,
Eddie.