Lippert hydraulic jack issues

[NickBoyer186]

I have noticed recently that when I un hitch my truck, the unit is slowly dropping. The trailer is not leveled with all 6 jacks, just the two up front are down to allow my truck to pull away. I have noticed 1.5 inches over 2 weeks. I took my trailer home and have it set up out front and I have noticed it dropped another half inch over the course of the last few days but seems to be holding steady at this level. I have NO leaks and I marked my reservoir and if it did leak any more fluid into the main tank I cant tell. I am at a loss, is it possible for air to get into these systems? I have had a few people from other forums tell me that a low voltage battery will cause it to drop, which doesn't make any sense. Any help is appreciated. THANKS!

[18CrewDually]

It's not unheard of the hoses' casings becoming delaminated and resulting in leaks. Just double check the hoses for bubbles in the outer jacket as this is a sure sign they need to be replaced.
Also on my hydraulic landing gear there is a pressure/flow relief valve that if it's open at all it will bypass fluid allowing it to drift like you describe.
Go to Lippert's website and download the manual for your system and get familiar with it before you try troubleshooting. Also I'd hook up the truck to the coach to support it incase you dump the pressure in the system and it starts coming down. Be Safe.