More towards disks... and southern cars The grease seal, ya the one on the back thats a pain in the but to get out of the disk... pull the bolt on the spindle, yank that baby off! Put the nut back on the spindle, set the disk on cockeyed with the back side facing the nut. Grab the disk at 3 an 9 an give it a pull. Should pop it right off. Other is PB blaster, best stuff on the planet for stuck bleader screws.
Little bit of drum brake info, based on experiences. You know those friggin starwheel adjusters? The ones that rust together and are impossible to move? Soak in PB Blaster overnite, and you should be able to get it apart with little difficulty. Once apart, clean thoroughly and apply light coat of hi-temp wheel bearing grease to the moving parts and re-assemble. You'll be surprised that after that they DON'T get stuck anymore. Did that on a car, and after sitting for most of 8 years, the adjusters are fine.