The point where the roller is nearest the track is probably the point where it jumped the track.
How to get garage door roller back on track.
Open the door while holding the roller against the track.
You need to check the release handle and make sure that it is on the track.
This makes it impossible to replace a garage door roller without unbolting the hinge that holds the roller from the door panels.
However it s not guaranteed that the roller will stay there no matter what.
Remove the locking pliers.
If this doesn t work proceed to the next step.
Detach the door from the automatic opener by pulling the overhead string to disengage the opener.
The roller should smoothly move up and down in the track.
If simply hitting the button does not work you will have to take more action.
Some units will actually reconnect themselves but this is not typically the case.
Similarly if a roller pops out of the track the repair is to uninstall the hinge first then tip the roller wheel into the track.
Make sure the roller is in the center of the track.
Once the door is back on track knock the track back into position with a rubber mallet.
Now take the pliers and pry open the track.
The roller has a stem that fits into a bracket sleeve while the roller itself fits into a track.
Now you will be able to open the door manually.
After troubleshooting the tracks to find the problem you can now get to work putting the rollers back on track.
Set the roller back in the track.
Open up the track with pliers.
Lift the garage door so the roller and the length of track you bent are lined up again.
The next step is to go to the inside of the garage door.
The garage door track curves up at the bottom to hold the wheel in place.
Locate where the roller popped out of the track.
Hit the end of the roller in the hinge with a hammer to push it back into place.
Open the door partially to move the wheels to the point where they are jumping off the track.
Once you have located the position use locking pliers to hold the door open by clamping them on one end of the track.
The doors on your garage are moved smoothly up and down by garage door rollers these are held in place by brackets that are attached to the door of your garage.
Raise and lower the door manually to ensure it is operating properly.
Locate where the rollers are jumping off the track.