How to put a chain back on an automatic garage door opener step 1.
Garage door opener chain off track.
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Open the door manually.
Once you locate where the wheels on the door are jumping.
The issue is going to be due to the cable untangling and lodging on the road and drum.
This can happen if a track is accidentally struck by a heavy object and bent outward.
Disengage the garage door from the opener by pulling down on the emergency pull cord to release the door trolley.
Reach overhead and pull the rope that releases the door from the opener.
If you find that your garage door opener chain falls off the track on which it has been placed you will need to put it back up and then tighten the chain to stop this happening in the future.
Fortunately fixing off track rollers is a simple diy project.
Keep it propped open while you fix the chain.
An instructional video on removing or replacing the chain on a garage door opener.
If you are outside the door when this occurs you will need some assistance to move the door manually.
You don t have to worry about messing with the powerful springs in your garage door so you can safely fix the misaligned garage door rollers without calling a professional.
When a roller on the garage door comes off one of the side tracks the opener won t be able to lift the door.
Here is our guide for how to fix an off track garage roller.