If there are obstacles that are blocking the wheel from rolling smoothly you just need to remove them and not do any repair.
Garage door wheel off track repair.
Reach overhead and pull the rope that releases the door from the opener.
You can repair serious dents by pounding on them using a hammer and block of wood but if you have a rubber mallet around use it instead.
Hammer the bent track back into the correct shape against the wood until it has returned to proper alignment with the rest of the track.
Open and close the door manually a few times to test if the rollers are operating smoothly.
After the tracks are secured using lock pliers get ahold of the outer edge of the tracks with a pair of pliers and pull it in the opposite direction.
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Make sure the door is reattached to the opener and can open and close smoothly.
A bad dent will cause the garage door to go off track easily similar to what a damaged rail can do to a train.
Now you can remove the wood and vise grips and your garage door should function properly.
Pull the rope in order to release the door from the opener.
You can secure the wheels into the track by knocking the edge of the track back into shape as it was before you used pliers on it.
To start the process check overhead for a rope that connects the opener to the door.
This allows you to operate the door manually.
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If there is heavy damage on the tracks simply replace them.
The garage door.
Open the door manually.
When you least expect it.
Before doing any repair check the metal tracks that are holding the wheels of your garage door.
Step 1 inspecting your garage door track.
Using pliers manipulate the metal on the edge of the track and slip the wheels back into the track.
To do this simply clamp the locking pliers beneath the door on one of the tracks.
Disconnect the garage door from the opener.
Get back on track.
Once you locate where the wheels on the door are jumping.