Location of Hydraulic Fuel reservoir

Hydraulic 'fuel'.. that's a new one on me.

OBVIOUSLY I meant FLUID.

Are you sure you're hydraulic? All the pics I find online for older Cougar 5th wheels appear to be electric.

If you do have a reservoir, it should be easily accessible.

There is an electric motor near the landing gear. With my very limited knowledge of hydraulics, I didn't think you would need an electrical motor with a hydraulic system. However, the manual that came with the trailer clearly state that it is a hydraulic system. Strange?

A pump is needed in order to run the hydraulic pump...

Have you looked in the compartment the propane cylinders are in, or it could be that the electric motor, pump, and reservoir are built as one unit.

If it is hydraulic the reservoir will be where the noise comes from.

The pump, tank and motor should be all one piece.

It's not hydraulic if you have an electric 12 volt motor attached to the landing gear. So what is the problem besides looking for something that isn't there? On the other hand I believe Big Foot leveling system is hydraulic, is that what you have?

My slides are all hydraulic and the pump and reservoir is easy to service it is next to the leveling legs switch.

I have not seen all Cougars, but I've never seen one with hydraulic anything. I think your manual is simply wrong. Huh, who woulda thunk the manual would have errors?