Here are directions:
Rap on the flange with a soft faced hammer to loosen the shaft. Grip the rib on the end of the flange with a pair of locking pliers and twist to start shaft removal. Remove the shaft from the axle tube.
The hub and drum assembly must be removed to remove the bearings and oil seals. You will need a large socket to remove and later adjust the bearing adjustment nut. There are also special tools available.
Disengage the tang of the locknut retainer from the slot or slat of the locknut, then remove the locknut from the housing tube.
Disengage the tang of the retainer from the slot or flat of the adjusting nut and remove the retainer from the housing tube.
Remove the adjusting nut from the housing tube.
Remove the thrust washer from the housing tube.
Pull the hub and drum straight off the axle housing.
Special tool in above diagram available from any parts store
Yes, in order to replace the shoes, all the above have to come off. Normal charge will be 3 hours labor to replace the shoes. If drums need machining, wheel bearings need to be repacked or replaced, that would be additional.