Hydraulic Cylinder Disassembly Question

[J_J]

Show a picture looking straight at the rod end.

 

[J_J]

Show a picture looking straight at the rod end.

Never mind, I see you did that in post #7

If it has a snap ring, then the parts should come out.

 

[dfkrug]

No evidence of a weld or joint at the rod end, I filed the paint
away to look.

In your 1st photo above, rotate all the way around and look for a small hole for a wire retainer,
or possibly flush socket-head set-screws.

 

[Leejohn]

Try pushing the gland in and see if you can see snap ring then. The gland well not move very far if thats the way it comes apart.

 

[Mysfyt]

I'll second what Leejohn said. Usually welded cylinders are welded on both ends.

 

[J_J]

Excerpt for the net.

Welded hydraulic cylinders can be custom-engineered for each application, and do not use tie rods or other mechanical fasteners to hold them together. In its simplest form, an end cap is welded to base end of the barrel. At the rod end, welded cylinders are available in repairable and non-repairable versions: repairable - with a threaded, removable head; and non-repairable - with a welded fixed head. Welded cylinders have superior seal packages as standard, which can be important for life cycle expectancy and for durability in applications that involve contaminants and weathering. Visually, the superior look of a welded design can improve the appearance of the equipment on which it's installed.

 

[downsizingnow48]

Thanks for suggestions. I wire brushed the paint off, no sign of a set screw, pin hole etc. Couldn't push in the gland. In the photo below it looks like the retainer is at a slight angle - lower on left than right. That made me think maybe it is a plug that is screwed in. But no threads on the exposed inner part of the tube. Maybe it was put together by putting in all the pieces from the base end, then welding the base end cap.

 

[dfkrug]

Maybe it was put together by putting in all the pieces from the base end,
then welding the base end cap.

That is certainly possible. A welded rod-end cap requires some assembly sequence that does not
cook the rod seal. The threaded end of your rod tempts one to think that it was assembled from
the base end, even if the other end does not look welded. That way the rod seal can be installed
after cooling.

My compact tractor experiences are by no means exhaustive, but I have only seen cyls welded
at both ends on JDs (power steering cyls).

 

[Leejohn]

I still thing it comes apart from the rod end. How did you try and push the gland in?

 

[Mysfyt]

Is there any name/number on it anywhere? Maybe if there is, we can try and come up with an exploded view drawing that would solve this mystery.