In the stack of books you should see one on the Lippert jacks. Your jack pump is in the front of your engine. You have to open the pump pressure valve and using an electric drill spin the motor one way for up and another for jacks down. I haven't tried this yet but almost had to when my motor froze. I called Lippert and the tech was fantastic. It was a Friday and he even gave me his cell to call him at night or Saturday, I was leaving for home on Saturday. After troubleshooting because the jacks would not come up, I tweaked it with a HAMMER. Up came the jacks and they stood up till I got home and Lippert had a new motor waiting for me that I installed.
Heads up --- about 2 months prior to this I blew the 15A fuse at the jack motor while raising the jacks.
Here is a good manual that even tells about resetting the control panel (press all 4 jack buttons), I had to do this too.
Lippert Jacks