I have not disassembled one of those Lippert units, but have worked on many which look similar, so - -
Drive motor to the left, distribution block in the middle, reservoir to the right. The motor is reversible so that means the control valve assembly is built into the distribution block. Depending on which way the motor is running the distribution block will route the hydraulic fluid in the direction it should go.
From my experience: There should be at least two (2), or maybe more, "O-rings" between the reservoir and the distribution block. Any one, or more, of these O-rings can/will develop a tiny leak. Fluid should be visible between the reservoir and the distribution block. These O-rings are most likely common sizes and probably can be found at any decent auto parts store. DO NOT lubricate with Vaseline. Vaseline will actually deteriorate the black looking (Buna-N) O-rings. Get a tube of hydraulic O-ring lube, common name: "Lub-a-cyl".
Be sure if you do tear this apart to put the distribution block back in the exact way it came out, or it won't work. Ask me how I learned.