Replace a broken gear and sprocket assembly with the manufacturer approved replacement part.
Garage door opener broken chain.
This is a yellow or red rope that hangs from the overhead garage door assembly.
The most common cause of a chain being loose and appearing broken is a broken gear and sprocket.
This can be easily replaced by a garage door service technician.
Located at the top of the motor unit the gear and sprocket assembly drives the chain that opens and closes the garage door.
The gear and sprocket assembly is inside the cover of the garage door opener motor.
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A garage door opener chain may make a lot of noise when you pull it to open your door but it is one of the most reliable types of door openers ever invented.
For many generations people rely on this type of door opener not only because it is easy to use but also because it is cheap and can easily be repaired when broken.
Step 1 locate the garage door s emergency release rope.
An instructional video on removing or replacing the chain on a garage door opener.
You can fix your broken door chain regardless of your familiarity with garage door repairs.