Apply a lubricant to both upper and lower tracks to keep the door hardware clean and operating freely.
How to keep sliding door in runners.
Most vacuums have a crevice attachment that can be used in the small space of the track for your sliding door.
Spray lubricant into the hole on the edge of the door.
Spray windex or similar spray cleaner.
Remove the doors and adjust the rollers.
The best way to lubricate any lock is to disassemble it and use an aerosol lubricant to flush away grime and coat the moving parts of the lock.
Turning the screw counterclockwise lowers.
Remove as much of the loose dirt as possible with a vacuum attachment then spray the tracks with windex.
Place the straw attached to the lubricant into the hole and press the trigger.
Now wipe the dirt away.
Turning the screw clockwise lowers the wheel and raises the door.
In addition to cleaning and lubricating sliding door tracks you want to lubricate the door lock.
You may have to use a screwdriver to loosen the level screws for the bottom wheels in order to get them to clear the bottom threshold.
Push the door up so that the wheels on the bottom of the door clear the track.
Your sliding glass will probably have a hole on the side.
After vacuuming then take a small whisk or other similar brush and vigorously brush away any remaining dirt and grime.
Another approach is to first clean out the track with the vacuum cleaner.
Using the screwdriver remove either the guide rail that runs along the edge of the door or the plastic guide that sits in the middle of the lower track.
Look for the hole in the door over the tracks or on the inside of the door.