The wheels should face downwards.
How to install new rollers a sliding glass door.
Replace the roller screws and use your phillips screwdriver to turn them clockwise until tight.
Slide the new rollers into the bottom of the panel.
Once you have the sliding unit back in the door frame you can adjust the rollers for optimal performance.
Keep adjusting the rollers until the door is sliding back and forth easily.
How to replace the roller assemblies in a glass sliding door i made this video because i needed to replace the slide rollers in my 10 year old glass sliding.
Insert the new rollers in the door lining up the holes on the rollers with the holes in the bottom of the door insert the new rollers in place.
To make it easier to install the sliding unit back into the door frame adjust the rollers to be all the way up into the frame.
In this video we show you how to replace a roller in a patio sliding glass door.
Use the old rollers as a guide for installing the new rollers.
You can find replacement patio sliding glass door hardware here.