Ditto on the tiny pictures. If the top of the cylinder with the ram coming out of it can be unscrewed, or removed by taking a retaining ring out, it can probably be rebuilt. The entire top of the cylinder must be removable, however. Your #2 picture looks like a "welded" cylinder. I think I'd prefer to buy a new cylinder from somewhere like Northern Tool & Supply with the same diameter and stroke, rather than trying to patch on an old one, unless it can be fixed easily. Definitely don't let someone at a rebuilding shop take you to the cleaners just because it's old. Hydraulics are very simple- - - -pressure times piston area equals lift- - - -nothing complicated at all if a new cylinder will bolt in!
Jerry
