In addition to cleaning and lubricating sliding door tracks you want to lubricate the door lock.
How to repair sliding door track.
Step 2 prepare the door.
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.
Once clear of the bottom track the door will drop out of the frame completely.
For repairs to hinged patio and entry doors please see how to repair a door.
Locate the two adjusting screws at the bottom of the door on the face or edge of the door and pry off the trim caps that cover the screws.
Raise it just enough to clear the track and roll smoothly.
Sliding door repairs are discussed in this article.
If your patio door track is bent out of shape repair is usually possible.
If your patio door track is physically broken so that the metal is ripped or worn away it is time to consider a universal replacement kit.
Completely open your sliding patio door.
When a sliding door doesn t work right the problem is often that the rollers have derailed so first check to be sure they re fitted onto the track properly.