Fairly easy to do, or it is to me.
See what brand and model your front end loader is, and Google that brand model seal kit.

Unhook hydraulic hoses from cylinder and plug hoses to keep oil from leaking.
I normally loosen the cylinder end cap while the cylinder is still attached to tractor/FIL.
Have bucket under cylinder end cap because hydraulic oil is going to come out.
Pull pins or bolts from cylinder end and rod end and remove entire assembly.
Pull rod out of cylinder. I use a large Vice to grip end of cylinder where pin or bolt goes through as putting cylinder wall in Vice may damage wall.

Take pictures of seals, take seals off and replace.

***Note which way the seal's walls with opening sit in the cylinder pistons and on the cylinder rod. ***


Put back together, refill tractor to correct level of hydraulic oil, operate lift, and then check oil level again and add oil to tractor.






















God a Bless,
David B.