Craftsman Garage Door Chain Fell Off

Once you locate where the wheels on the door are jumping.

Craftsman garage door chain fell off.

Replace a broken gear and sprocket assembly with the manufacturer approved replacement part. If you are outside the door when this occurs you will need some assistance to move the door manually. Disconnect the garage door from the opener. Located at the top of the motor unit the gear and sprocket assembly drives the chain that opens and closes the garage door.

The chain is attached to a threaded rod that is attached to the trolley. 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. Pull down the trolley cord to release the trolley from the chain arm and lower the door by hand. Keep it propped open while you fix the chain.

Grasp the chain 1 foot from where it connects to the end of the threaded chain anchor. To reinstall the chain on the sprocket first with the door closed pull the rope hanging down from the trolley on the t bar. This will release the door from the garage door opener. If your garage door is closing fully and then reversing to open again then it may be due to a problem with the close limit switch.

Problem is that the door only seems to want to close and it s already closed. Every time you push the. Thread the nut s facing the door clockwise until it meets the bracket then release the chain. If the gear and sprocket assembly breaks the motor runs but the door won t move.

I have a 4 year old craftsman 1 2 hp garage door opener. Pull the chain toward the garage door and hold it in position. Press down on the chain with your finger. The chain fell off the drive so i put it back on and re tightened.

Reach overhead and pull the rope that releases the door from the opener. The chain moves about 6 inches trying to close again and stops.