Work a flat head screwdriver under one of the wheels lift it and angle the door slightly until the wheel clears the track.
How to fill in track on sliding door.
Remove the door from the track.
The track on the sliding glass door should have a weep hole drain hole on each end to drain the water out of the track.
Repeat with the other wheel then angle the bottom of the door out and remove the door.
Keep a firm grip on both edges of the door while.
Open the door about half way lift it straight up and pull the bottom toward yourself until it is free of the track.
I m attaching 2 pics.
In this video we show you how to install both a large and small sliding glass door track cover.
It is likely that one or both of these weep holes are clogged.
First one shows the screen track and the track where the sliding half of the door sits when it s closed.
Look for dirt or debris that could be clogging these holes.
Water collects on both sides of the track where the sliding part of the door sits and where it slides.
In this video i demonstrated how to make tracks for a sliding wooden door and a technique to modify your saw blade.
Feel free to ask me any questions and com.