I just finished doing this job on my '48 dually today. Right front wheel locked, brake adjusters frozen. Unscrew the cap on the hub, pull the cotter pin from the adjusting nut, remove the nut, use a good three jaw puller and slowly pull the assembly off. You'll have to fish the outer bearing out as you go but it's pretty simple. On mine there was rust on the shoes under the brake material that caused the material to separate from the shoes and jam everything up.
