I have a Landmark Grand Canyon with three slides. The slides and landing gear are operated via a Lippert Hydraulic pump. I understand how to operate the pump in the event of an electrical failure. However, no one including my dealer, Bill Plemmons RV in Rural, Hall, NC have been able to tell me or or show me how me how to get the slide in or the landing gear up in the event of a broken hydraulic line. In other words, how do you get the unit "road ready" in the event of a hydraulic line break or line failure? Please advise.