well cylinders

A wheel cylinder that only pushes on one side needs to be replaced - right?

not necessarily, gerob. The bore can be polished with emory paper, if not pitted inside. Seizure on one side usually is due to moisture/water in the cylinder bore, and is common in vehicles that were idle for a while. If you're lucky, the bore is okay, and you've just got rust caked on the rubber plunger inside the cylinder.

Thanks for the info I'll take a look at that.

Thanks for the info I'll take a look at that.
Price one first. some I have seen are like 20 bucks not worth rebuilding .