How do you use hydaulic levelers?

mtrumpet wrote:

dieharder wrote:
Check your fluid level. If the fluid is low, the jack could still extract but might not provide much strength.

While it's certainly always a good idea to check your hydraulic fluid, unfortunately, that's not quite how hydraulics work. The fluid being pumped into the jacks is what is extending the jacks. If the system were to run low on fluid, the hydraulic pump would have no fluid to pump to the jacks to make them extend. They would only go so far, until the pump ran out of fluid to pump, then stop extending. At that point, the pump would most likely start making some pretty awful noises as it starts to run dry. The worst thing to do to a hydraulic pump is to run it out of fluid.

*To be clear, I am not that familiar with PowerGear leveling systems. I have HWH on mine. I am speaking in terms of general hydraulics here...

Another thing that might be a consideration is that there may be a worn valve spool or spools in the directional valve (which directs the fluid to the jacks or opens to let the fluid back to the reservoir when the jacks are retracted) that might be worn just enough that over time, enough of the fluid/pressure leaks back through the worn spool(s) to ever so slightly retract your jacks to cause the rocking that you're experiencing. (It could also be a worn check valve, depending upon how PowerGear has their system set up.) In hydraulics, we generally refer to this as cylinder creep.