A broken or damaged sliding glass door can be so annoying and inconveniencing. Start by tightening the adjusting screws to see if the rollers will move smoothly. If that does not work, try loosening the screws. If this also fails to bear fruit, you should move ahead to clean the track. Remove the trim from the area around the glass. Now pull the door from the door frame. Lay the door on the ground and remove the locks to check their functionality. You will likely need to replace the rollers. Ensure you get compatible rollers to ensure optimum functionality.