Unless a jack is seriously damaged, most jacks can be retracted simply by opening the manual valve release for each of the jacks. This includes spring-retract (single-acting) jacks and power-retract jacks (double-acting jacks without springs).

Spring-retract jacks should retract by themselves when the valves are opened. If the springs are missing or the jack does not retract, the jack can usually be pried up using a bar, board or shovel. Power retract jacks will have to be pried up after the valves have been opened.

Locate the hydraulic control unit. If the pump runs, you can operate the system so you can use the sound of the pump to locate the control unit. The park brake (if so equipped) must be set to use the pump. The ignition must be on or for towable units, there may be a master power switch that must be on. Locate the HWH Leveling System control panel. If the top left button has an “I” or “HYD” on it, push the button one time. When the light above the button is on, the manual arrows on the right side of the panel will function. If the top left button has a symbol instead of an “I” or “HYD”, the manual arrows will function with the ignition or master power switch on. Push any of the “UP” arrow buttons to run the pump so you can locate the control unit. The control unit can be mounted in a compartment, behind the front grill, or mounted to the frame of the vehicle under the vehicle. The solenoid valves on the control unit should be accessible without crawling under the vehicle.

WARNING: DO NOT CRAWL UNDER ANY VEHICLE SUPPORTED ON THE LEVELING JACKS WITHOUT PROPERLY SUPPORTING THE FRAME OF THE VEHICLE SO IT CANNOT DROP. WHEN THE FLUID IS RELEASED FROM A JACK THE VEHICLE MAY DROP AND/OR MOVE FORWARD OR BACKWARD CAUSING INJURY OR DEATH.

Make sure people and objects are clear of the vehicle before opening valves. Allow clearance for the vehicle to lower. Open solenoid valves slowly so the vehicle drops slowly as the fluid is released.

If all of the jacks must be retracted, proceed to the appropriate instructions for “MOTORIZED VEHICLES” or “NON-MOTORIZED VEHICLES“.

If individual jacks need to be retracted, refer to the “HYDRAULIC CONTROL UNIT ARRANGEMENTS” later in this section for valve locations.

Refer to “VALVE IDENTIFICATION AND OPERATION” located later in this section to help identify the valves you are dealing with so they can be opened and closed properly.