Same ^. Just pump them out. Hard to believe it wouldn't work. More force than any other method.
Clean them with brake cleaner, use red grease on new seals and spray some ACF50 on the exposed surfaces of the piston; helps stop corrosion again.
Clean them with brake cleaner, use red grease on new seals and spray some ACF50 on the exposed surfaces of the piston; helps stop corrosion again.