I know the fluid wears out and breaks down but I would think it should still hold pressure. I agree that power is a big part of it usually with this system. Are there batteries still in the RV? If not it may require more current(amps) then the generator supplies. Did you manipulate any of the valves on the solenoids? It maybe all the fluid just seems odd that if the pump spins and the valve opens it should change height.
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R.J. and Ginger
2019 Ram 3500 6.7 HO, Aisin Trans 3:73
Reese Goosebox
2019 Sandpiper 379FLOK
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