Garage Door Chain Sprocket Tie Down

Press down on the chain with your finger.

Garage door chain sprocket tie down.

When the sprocket rotates clockwise and stops by itself the motor will be in a closed position. I had a chain come off the sprocket on my chamberlain garage door opener. Drill through the sprocket and shaft and install a bolt hardened bolt if needed through the shaft. Remove the outer nut and lock washer from the trolley threaded shaft and pull the threaded shaft out of the trolley.

Pull down the trolley cord to release the trolley from the chain arm and lower the door by hand. Loosen the chain or belt tension and slip the chain or belt off the sprocket. Slide the outer trolley away from the inner trolley. Pull the chain off the motor unit sprocket and out of the chain spreader.

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. Activate the opener via remote control and watch the sprocket. Lay the chain on the garage floor while you complete the repair. Pull the chain toward the garage door and hold it in position.

This sprocket is typically used on a soled keyed garage door shaft. Stand on a ladder so you can look down towards the top of the sprocket. Place a stepladder near the motor and unplug the power cord for the motor from the electrical. 34 1 02 oz 20 62 20 62.

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. I tried to work with the down screw to put it in reverse but that did not help. Plug the opener back in.