Power Jacks

Ok, ain't been around for a wile, but now I have a question about my levelers(Power Jack). Anybody knows who makes them? Can't find anything on the net about them. They are making a funny noise going down, but not going up. Checked the fluid, its ok. Oh, its on my 2002 28 ft Landyacht.

[Ohiofred]

Are you sure they are Power Jacks and not PowerGear. Jacks installed by A/S are PowerGear. Web site is Powergearus.com
Hope this is some help.

[alfalsetto]

Now if you had a 1982 Airstraim I have the paper work for that set of jacks