The outer bearing race goes outward, you drive it out from the opposite side. In your case, lay the drum outside down and you should be able to see the lip from inside the bore. You may have to wipe out all the excess grease & grime to see it tho.
1956 GMC 370 dump " 'Tater "1970 VW Volksrod "the Black Bomber"
2007 Chevy Avalanche
2020 Jeep Cherokee Trailhawk,
2005 Harley Davidson FLHTCUI
I dig all cars, old and new, whether they were hammered out of American iron, German steel, or Japanese tin cans. Being unable to appreciate them all is missing out on a world of great things.
But thats just MY opinion! :P