Power gear hydraulic lifts (500707)

[Nbrew]

2001 National Dolphin 6355 with power gear hydraulic leveling jack system (500507) jacks will not go down,fluid good, sounds like motor is running when depressing buttons but lifts don’t Go down. Changed the motor still doing the same thing. Any suggestions. Newbies.

[Waiter21]

When was the last time it worked?

If the pump motor is running, but none of the jacks are going down, it can be one of three things..

1) I find it difficult to believe that all three extend solenoids are not energizing, but Its possible.

2) The return (retract) solenoid valve is stuck open.

3) The pump is bad.

Ojn mine, I can get to the solenoids. I'd probably use a voltmeter to make sure the solenoids are energizing.

Probably take a couple jumper wires and exercise the return solenoid to see if its jammed (on-off-on a bunch of times).

The only way to check the pump is to disassemble it and look.

[MSHappyCampers]

Hi ! Welcome to IRV2! We're sure glad you joined the gang!

Sorry I can't help with the jacks problem! Seeing things like this make me more thankful for my air leveling!

Good luck, happy trails, and God bless!

[Nbrew]

You want believe it! There was a wire disconnect. Seems to be working fine now.

[Waiter21]

EXCELLENT - Glad you found the problem...