In Reply to: Re: Dearborn 19-8 Hydraulic Cylinder Overhaul posted by Nyquil Junkie on March 12, 2023 at 20:55:06:
These are displacement cylinders. The end of the rod acts as the piston and the cylinder does not need a seal other than the gland seal and wiper on the end of the tube.
The diagram for the Dearborn 19-21 single acting cylinder is probably a better bet on how the 19-8 cylinder is constructed. As you can see its very basic. Items 6, 7, and 8 in the Wagner cylinder diagram are stops/guides to help align the rod and prevent it from being pushed out of the cylinder.