leaking cup seals on the wheel cylinder, guaranteed. As long as the brake lines are in tact. Umm basically the wheel cylinder is attached to the backing plate (i believe) and i'm sure you can score a used one for cheap money. But you need the proper tools to work ont the drums otherwise it's a bitch.
Basically take off the wheel and hit the drum with a rubber malet hard and try to wiggle it off. Once it's off you'll see what you're up against. It's pretty straightforeward, basically everything has to come off and go back on. But if you don't know what you're doing you may want someone to help you or do it for you. Service manual works wonders too.
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