If the sunroof still moves on its own, slide it halfway open, pry down the forward edge of the liner (there should be 4-5 clips) to release the liner from the sunroof, hold the liner and slide the sunroof all the way open. Pull the liner up through the sunroof opening and off the car. Close the sunroof and scribe the position of the nuts along the side edges holding the sunroof panel to the sliding carriers. Remove the nuts and lift off the sunroof panel. Consider cleaning and lubing the 30 year old sliding mechanism (MB has a special gleisspaste), and replacing the peripheral gasket if there is wind noise.

Sixto
87 300D^2