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  1. cssheelll33

    Single Acting Vertical Jack

    Single acting/closed system and piston dropped but oil level in tank dropped as well, no holes in cylinder or bulkhead. No power on system and ball valve closed at tank.
  2. cssheelll33

    Single Acting Vertical Jack

    That's where it gets weird, the cylinder was pulled and tested with no indication of bulkhead issues, the oil level measurement was precise. The only thing i can think of is some-way the weight of the piston had cause a suction affect if the possibility the shut off valve isn't fully sealed.
  3. cssheelll33

    Single Acting Vertical Jack

    Cylinder head - port head; sorry trade term. The only pressure that would be on the system is what was used to get the cab to the position it was suspended at then the shutoff valve closed. There is seven 90 degree joints in the system on 2.5" piping. This is a generic layout. Example of...
  4. cssheelll33

    Single Acting Vertical Jack

    Here is an interesting scenario just looking for an explanation. I just recently had brought to my attention a scenario with a hydraulic elevator. The elevator cab was suspended from above and the piston was disconnected from the car. The shutoff valve was closed at the tank with hydraulic...

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