All of these cylinders are double acting. ---power in both directions. When I did my Case 580ck backhoe cylinders, they had a lot of plastic rings in them. From what I see in the parts book, this one has the same set-up.
Case had a very bad habit of making stuff .010 undersized so standard stuff don't fit!

"A machine you build yourself is a vote for a different way of life. There are things you have to earn with your hands."