I have a 2001 ZD21 with a leaking lift cylinder. Can these cylinders be rebuilt and if so, how are they disassembled?
Cylinders are very simple and easy to overhaul however they make a million different size and type O-rings and seals. It can be challenging sometimes to get the right rings and seals but more often than not they are cheaper than dirt to replace so you can easily buy a selection. I would suggest you take it apart and see what rings are needed. It should have some kind of snap ring on the top of the end cap which you remove and that would allow you to pull the rod all the way out. On the outside of the end cap it probably has an o-ring with a backer ring behind it. The inside should have a wiper ring on the end which just keeps dirt out of the cylinder. Then there should be some type of seal on the inside of the end cap down from the wiper seal which is probably the reason your cylinder is leaking. Then the piston probably just has an o-ring with a backer ring on each side. Make a note how these rings are arranged and maybe take a picture and remove them so you can gets some measurements. I use "The O-Ring Store" to get the parts I need. They ship pretty quickly.I have a 2001 ZD21 with a leaking lift cylinder. Can these cylinders be rebuilt and if so, how are they disassembled?