R-Vision trail lite 2002 model 5281S 5th wheel slide out

I used a 2002 R-Vision trail lite (non fifth wheel) last summer. It was a manual slideout that you crank with a handle similar to a jack crank. The mechanism was under the couch in this trailer in the center of the slide (more or less). Look under the couch. The jack type handle needs to fit the screw mechanism there and you just turn until the slide is in/out.