Garage Door Opener Sprocket Sheared Off

Located at the top of the motor unit the gear and sprocket assembly drives the chain that opens and closes the garage door.

Garage door opener sprocket sheared off. The bag said it was an oem piece. Find the chamberlain garage door opener technical support you need to get your garage door opener operational. I had to replace the gear and sprocket assembly after the sprocket got sheared off likely due to too much play in the chain. It wasn t listed for the same model but after looking online it seems that most garage door openers made after 1984 use the same sprocket assembly.

This gear kit on amazon. Over time the sprocket s teeth can wear and the chain may jump or skip when the opener raises the door. Most likely caused by a worn out gear inside the opener or a sheared off sprocket at the top. This diy repair guide explains how to replace the gear and sprocket assembly on a chain drive garage door opener.

If yours is a belt drive you need a kit like this https amzn to 2zqns. This can be replaced in about an hour. The most likely cause of a door that won t go up is a broken spring. My door won t go up.

This is a video on how to change the gear sprockets in a craftsman garage door opener. The motor runs but nothing happens. This gear set worked great and replaced a broken one in my 2002 1 2 hp chamberlain liftmaster yesterday. Chain drive garage door openers have a sprocket that is attached at the top of the motor.

From informational videos to product manuals and troubleshooting articles the chamberlain group resource library has the information you need. The replacement of this part is relatively straight forward and the instructions that come with the part part number 41c4220a are clear. Https amzn to 2uwvnkj i m working on a chain drive opener. It was a perfect replacement and the garage door is working.

If the gear and sprocket assembly breaks the motor runs but the door won t move.