sonoma 123:
I removed the hydraulic lines from the cylinders and attempted to press them in by hand, they did not move in. I either don’t have the strength to push them in or they are the problem. [/b] If the hydaulic lines are removed from the rams, the shaft should freely move in or out. Most likely they will need to be disassembled and repaired.
A couple of things to check would be
the oil itself. it can, over time, coagulate and become near solid.
Look for some type of device over the shaft that would prevent it from collapsing.