David-and-Cheryl
Well-known member
A few days ago, the front landing gear on our 2013 Landmark began to sink. They dropped 7 inches from level overnight. The rear and middle jacks extended as the front dropped, so all six of the Lippert Level-Up pads were on the ground.
I found a small puddle of hydraulic fluid in the front generator compartment under the Lippert hydraulic manifold. Further investigation revealed that the Hydac cartridge valve for the kitchen slide-out on the manifold was leaking. There do not appear to be any leaks around the landing gear themselves.
I've ordered a new Hydac cartridge because that one obviously needs to be replaced if it's leaking. But I'm wondering now if the leak from that cartridge is the cause of the landing gear drift-down, or if there are two separate problems.
If the Hydac cartridge for the kitchen slide had an internal clog or malfunction in it that caused it not to close completely, could that bypass allow hydraulic fluid to bleed from the front landing gear back into the rest of the system? I know that the landing gear has its own Hydac cartridge valve, but the valves for the rear jacks are on the same manifold as the slide-outs, so I don't have a complete picture of the plumbing.
I found a small puddle of hydraulic fluid in the front generator compartment under the Lippert hydraulic manifold. Further investigation revealed that the Hydac cartridge valve for the kitchen slide-out on the manifold was leaking. There do not appear to be any leaks around the landing gear themselves.
I've ordered a new Hydac cartridge because that one obviously needs to be replaced if it's leaking. But I'm wondering now if the leak from that cartridge is the cause of the landing gear drift-down, or if there are two separate problems.
If the Hydac cartridge for the kitchen slide had an internal clog or malfunction in it that caused it not to close completely, could that bypass allow hydraulic fluid to bleed from the front landing gear back into the rest of the system? I know that the landing gear has its own Hydac cartridge valve, but the valves for the rear jacks are on the same manifold as the slide-outs, so I don't have a complete picture of the plumbing.