Move the door back and forth like you did in step 1 to help the door glide over the oiled areas.
How to fix hard to slide door.
You may also want to check out our step by step guide to adjusting your sliding doors.
To realign your door in the tracks at the top and bottom of the frame remove the door from the track and reinsert it.
This will actually help to move around the lubricant into the harder to reach middle area where the door is constantly sliding and experiencing the friction that makes it stick.
Most sliding doors manage to get knocked off kilter at one point or another.
Then lift the door up and out of the track laying it down carefully across two sawhorses.
Never leave the glass door unattended.
Turning this screw raises or lowers the roller.
Give the screw a clockwise turn and test to see whether the door slides easier.
Sliding doors are very heavy very breakable and very expensive this is a two person job.
Finally add the 3 in 1 oil along the track.
Make sure the rollers at the top are aligned first then walk the bottom of the door.
Most sliding doors have a mechanism called an adjusting screw located at the bottom of the door ends.
If the door becomes even harder to open turn the screw in the opposite direction.
First slide open the door completely and remove the head stop.
Years of dirt exposure to the elements and hard use can turn sliding doors into sticking doors.