2002 Itasca Horizon 32 TD Jack won't stay down

[dawgout]

All my leveling jacks deploy and lift, but the rear driver's side slowly retracts in a couple of hours, The other three remain deployed. Any Ideas?
Thanks!

[emiddleb]

The first thing to do is wipe down the extended ram and spray it with silicone spray. Others say use something like hydraulic fluid, but in either case the idea is to make sure it's as clean and slippery as possible.

Understand that on your HWH system, the pump hydraulics force the jack down, but it's the springs that cause it to retract (after the solenoid has released on the hydraulic flow.) If you are on the original springs you may need to replace them. A few years after your model was built HWH came out with a stronger spring for the jacks. That may solve your issue on that jack.

Another possibility is that the solenoid is not fully releasing when you try to retract the jack. But I would try that one last as you are eventually raising the jack. In the time being, you can gently force it to raise by using a 2x4 or something to help it.

[dawgout]

I see I was not clear in my description. My rear driver's side jack retracts when it supposed to be down and it won't stay down. How do I keep it down?

[Morich]

Bad solenoid operation is letting the hydraulic pressure leak off and that lets that jack sneak back up.
Since is doesn't do it in a way that lets the jack come up rapidly and fully, I would lean away from an electrical problem but tend to look at seals on that specific jack operation.

As a start, do you have the HWH manual that should have come in the big info pack?
If not on hand, looking for the correct model of jacks and then searching for info online, would be my choice.

[emiddleb]

Yes, sorry, I misunderstood the issue. Morich has the right call on this.

[Ray,IN]

This will help ID your model# of HWH leveling system: When you ID the model#, the service manual is readily available online at: https://www.hwhcorp.com/ML44100b6.html