Garage Door Chain Sprocket Broke

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Garage door chain sprocket broke.

Slide the outer trolley away from the inner trolley. Lay the chain on the garage floor while you complete the repair. A new front sprocket costs about 150 200 include the labor to install it. Another common cause for a loose chain could be the front sprocket breaking.

The front sprocket is at the end of the opener rail closest to the garage door opening. Keep your fingers on the sides of the chain at least three inches away from the sprocket lift up the chain and unwrap it from the sprocket. Immediate troubleshooting is required and a new garage door chain will need to be installed in place of the old one. Pull the chain toward the garage door and hold it in position.

If the sprocket is still on the top of the opener carefully remove the chain from the sprocket. This was a craftsman model 139 53976srt. This gear kit on amazon. Tighten the bolts on.

This is a video on how to change the gear sprockets in a craftsman garage door opener. Thread the nut s facing the door clockwise until it meets the bracket then release the chain. As a result the garage door will open a few inches and stop or it will close a few inches and reverse. Press down on the chain with your finger.

A broken garage door chain will immediately impact your garage door s operation and render its automatic motorized capability effectively useless. Slide the pulley toward the garage door until the chain is stretched tight then move it toward the motor until the middle of the chain touches the upper side of the chain arm. Remove the outer nut and lock washer from the trolley threaded shaft and pull the threaded shaft out of the trolley. Https amzn to 2uwvnkj i m working on a chain drive opener.