Garage Door Chain Drive Adjustment
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Garage door chain drive adjustment. If you stand at the door facing the motor you will probably see the threaded rod that adjusts the chain length on the right side of the door. There are only a few ways that the chain can be tightened. You will have to apply a spanner to each and turn them in opposite directions. Adjust the chain on a garage door opener with help from a garage door spec.
Loosen the two lock nuts on the threaded rod. Use the wrench to loosen the lock nuts and turn the adjustment nut to set the slack in the chain. On the master link you will see two or three nuts. Adjustments on the chain are located at or near the master link where the chain engages with the cable graphic below left.
The chain is a very important component that makes up a garage door opener system. There may be an adjustment linked to the chain or an adjustment to the length of the door opener track. Chain adjusts by shortening the chain itself.