Replace the roller screws and use your phillips screwdriver to turn them clockwise until tight.
Replacing old sliding door rollers.
Before installing new rollers adjust them to lowest possible position so panel is low in door not raised up.
The rollers are at the top and or at the bottom of the door.
Take a roller to your local hardware store and purchase a replacement.
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.
Once removed transfer your door to a flat working space such as a floor and remove the screws from the rollers.
Replace with the new roller and re insert the screws.
The first step regardless of what kind of door you have is removing the door from the track.
Replace the bottom frame.
Unscrew the rollers and remove them.
Replace the roller if the rollers or sliding glass door wheels are full of dirt and debris give them a good cleaning and a few drops of lubricant and see if they spin freely.
You can find replacement patio sliding glass door hardware here.
In this video we show you how to replace a roller in a patio sliding glass door.
Then if you have a vinyl door unscrew the old rollers and slot in the new ones before screwing them into place.
Insert the replacement sliding door rollers into the cavity along the bottom of the door.
Use the wooden block and rubber mallet to gently tap the frame back onto the.
However if the rollers are worn cracked or bent remove them photo 4 and replace them with a new pair.
Make sure the rollers spin sufficiently before re installing your sliding glass door.
Using a hook tool we used a balance hook a bent hanger or needle nosed pliers grip underside of roller housing or roller adjustment screw through side of door and pull out.
Always take the roller with you to the hardware store to avoid purchasing the wrong piece.