Tightening A Garage Door Chain

The trolley is responsible for pushing or pulling the opener arm along the chain so as to open and close the garage door.

Tightening a garage door chain.

The one you re looking for is attached to a bolt found at the spot where the trolley or carriage connects to the rail. A sagging chain is a result of normal usage of the garage door opener. There s usually a piece of rope hanging from it which is used to disengage and re engage the opener. Tighten the chain using the tension nuts after verifying the chain needs tightening begin by turning the inside nut which is the one closest to the opener several turns in a counterclockwise direction when facing the door.

Thankfully garage door manufacturers have included a part in their designs that can help you tighten your chain and stop the chain from slapping against the rail as it opens and closes your garage. Tightening your garage door chain is a simple matter of turning the right nut. This will cause the nut to back away from the door and toward the opener. Turn it counterclockwise holding the other nut in your hand to prevent it from turning.

Then use the wrench to tighten this second nut clockwise until the chain is tighter but not so taut that it is completely inflexible.