Garage Door Chain Drive Adjustment

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Garage door chain drive adjustment.

Usually a pair of nuts are associated with the locking mechanism while one is concerned with the adjustment of the chain. There may be an adjustment linked to the chain or an adjustment to the length of the door opener track. The chain is a very important component that makes up a garage door opener system. 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.

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. Chain adjusts by shortening the chain itself. On the master link you will see two or three nuts.

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. Lower the garage door to take the stress off the chain.