Ok just remove shoes and attaching springs, parking brake hardware, unbolt the 4 nuts holding the axle/backing plate on. Pull out the axle, dont need a puller, just pull out, might need some light persuasion, the bearing will be on the axle. Will need a seal puller, or improvise, but seal is in the housing. Pull out seal, then pound in a new with the proper seal installer. Harbor freight sells a inexpensive one. Reverse order to assemble..