Help with PS Cylinder

[Eddie]

Lens12,
Do you have any drawings on this cylinder. It is from one of your PS kits.
Evidently has a valve problem, works good turning right, will not assist turning left. Hydraulic shop rebuilt it but still does the same thing.

 

[Buppie]

Len can't help as far as info on the cylinder/control valve ,I've tried. Mine leaked at both ends after little use. I couldn't get info on the cylinder and control valve. Most cylinders aren't difficult to rebuild. Getting info on the control valve/stinger is the key and not even Martin Diesel has a manual. The cylinder rod continues to leak a little, and the design is to blame in my opinion. They used an o-ring w/backup ring instead of a vee packing.