Garage Door Chain Sprocket Tie Down

Pull the chain off the motor unit sprocket and out of the chain spreader.

Garage door chain sprocket tie down. I had a chain come off the sprocket on my chamberlain garage door opener. Press down on the chain with your finger. 34 1 02 oz 20 62 20 62. Pull down the trolley cord to release the trolley from the chain arm and lower the door by hand.

Place a stepladder near the motor and unplug the power cord for the motor from the electrical. Liftmaster 41c4220a gear and sprocket kit for chamberlain sears craftsman and liftmaster 1 3 and 1 2 hp chain drive models 4 8 out of 5 stars 3 339 20 34 20. Pull the chain toward the garage door and hold it in position. Activate the opener via remote control and watch the sprocket.

Grasp the chain 1 foot from where it connects to the end of the threaded chain anchor. Can be used on tube shafts. Loosen the chain or belt tension and slip the chain or belt off the sprocket. Plug the opener back in.

Lay the chain on the garage floor while you complete the repair. This sprocket is typically used on a soled keyed garage door shaft. I loosened the nuts to allow me to put it back on tightened it back up and now the door goes down but comes 1 3 of the way up again. Thread the nut s facing the door clockwise until it meets the bracket then release the chain.

When the sprocket rotates clockwise and stops by itself the motor will be in a closed position. I tried to work with the down screw to put it in reverse but that did not help. Stand on a ladder so you can look down towards the top of the sprocket. Slide the outer trolley away from the inner trolley.