What kind of oil does a hydraulic jack use?

A hydraulic jack uses a liquid, which is incompressible, that is forced into a cylinder by a pump plunger. Oil is used since it is self lubricating and stable. When the plunger pulls back, it draws oil out of the reservoir through a suction check valve into the pump chamber.

Are there hydraulic leveling jacks on my 2006 Seabreeze?

On our last trip, Dec 2018 with my 2006 National SeaBreeze LX 32′, the hydraulic leveling jacks deployed correctly, but upon leaving they retracted normally, but slow, and then the control panel displayed at least one of them was still down and would sound an alarm when I removed the parking brake.

What kind of fluid do you use for leveling jacks?

Hello Joe, Typically Fleetwood used the Power Gear leveling system which is now owned by Lippert Components Inc (LCI). According to the Power Gear manual, they recommend the following: Type A automatic transmission fluid (ATF, Dexron III, etc.,)will work satisfactorily.

Where is the discharge check valve on a hydraulic jack?

When the plunger moves forward, it pushes the oil through a discharge check valve into the cylinder. The suction valve ball is within the chamber and opens with each draw of the plunger. The discharge valve ball is outside the chamber and opens when the oil is pushed into the cylinder.

Hello Joe, Typically Fleetwood used the Power Gear leveling system which is now owned by Lippert Components Inc (LCI). According to the Power Gear manual, they recommend the following: Type A automatic transmission fluid (ATF, Dexron III, etc.,)will work satisfactorily.

On our last trip, Dec 2018 with my 2006 National SeaBreeze LX 32′, the hydraulic leveling jacks deployed correctly, but upon leaving they retracted normally, but slow, and then the control panel displayed at least one of them was still down and would sound an alarm when I removed the parking brake.

What causes hydraulic fluid to run out of HWH?

They are a long way away and the fluid there is dead-ended. That is, it never re-circulates back to the reservoir. When an HWH jack is retracted, there is no fluid in the jack. When it is extended, then the fluid runs from the reservoir tank thru the hose to the jack and the jack extends.

Where does the fluid go in a HWH Jack?

When an HWH jack is retracted, there is no fluid in the jack. When it is extended, then the fluid runs from the reservoir tank thru the hose to the jack and the jack extends.