Originally Posted by Dan Hen
A friend has an Excel that the front jacks will not extend, the HYD slides works OK the pump runs when trying to extend the jacks.
I think it is the relay, or wiring.
Dan, I've had this issue except the jacks wouldn't retract. Same issue. Does his system have the pendent? If so, they have issues with the 4 control switches on the pendent. You can command the jack, the hydraulic motor runs and the jack doesn't move because the appropriate solenoid doesn't function. The pendent switch is not entergizing the solenoid.
Have your friend take something like the handle end of a screwdriver and tap/rap on the switch on the pendent that is acting up. That ususally turns out to be a temporary repair until the pendent can be replaced by Lippert. Good luck and let us know if that worked.
BTW, Curtis is great on these things at PI. He is the SME of hydraulics. I've also had some experience as I was trained on the Cad XLR (before retirement) with the folding retractable top and it uses much the same concept as our Lippert hydraulics. rockin'