Garage Door Chain Sprocket Tie Down

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.

Garage door chain sprocket tie down.

Grasp the chain 1 foot from where it connects to the end of the threaded chain anchor. I had a chain come off the sprocket on my chamberlain garage door opener. 34 1 02 oz 20 62 20 62. When used on tube shafts it is advisable to fill the tube shaft with a steel or wood dowel in the area of the sprocket and through bolt the sprocket.

Remove the outer nut and lock washer from the trolley threaded shaft and pull the threaded shaft out of the trolley. Pull the chain toward the garage door and hold it in position. Place a stepladder near the motor and unplug the power cord for the motor from the electrical. I tried to work with the down screw to put it in reverse but that did not help.

Press down on the chain with your finger. This sprocket is typically used on a soled keyed garage door shaft. Lay the chain on the garage floor while you complete the repair. Stand on a ladder so you can look down towards the top of the sprocket.

When the sprocket rotates clockwise and stops by itself the motor will be in a closed position. Can be used on tube shafts. Slide the outer trolley away from the inner trolley. Plug the opener back in.

Pull down the trolley cord to release the trolley from the chain arm and lower the door by hand. Pull the chain off the motor unit sprocket and out of the chain spreader. Thread the nut s facing the door clockwise until it meets the bracket then release the chain. Drill through the sprocket and shaft and install a bolt hardened bolt if needed through the shaft.