Garage Door Opener Sprocket Sheared Off

Find the chamberlain garage door opener technical support you need to get your garage door opener operational.

Garage door opener sprocket sheared off.

When the garage door goes off track it can be a serious inconvenience. The motor runs but nothing happens. If you find that your garage door opener chain falls off the track on which it has been placed you will need to put it back up and then tighten the chain to stop this happening in the future. This was a craftsman model 139 53976srt.

This gear kit on amazon. It was a perfect replacement and the garage door is working. This is a video on how to change the gear sprockets in a craftsman garage door opener. The bag said it was an oem piece.

If yours is a belt drive you need a kit like this https amzn to 2zqns. The most likely cause of a door that won t go up is a broken spring. The replacement of this part is relatively straight forward and the instructions that come with the part part number 41c4220a are clear. Over time the sprocket s teeth can wear and the chain may jump or skip when the opener raises the door.

This diy repair guide explains how to replace the gear and sprocket assembly on a chain drive garage door opener. Most likely caused by a worn out gear inside the opener or a sheared off sprocket at the top. If the gear and sprocket assembly breaks the motor runs but the door won t move. Https amzn to 2uwvnkj i m working on a chain drive opener.

Chain drive garage door openers have a sprocket that is attached at the top of the motor. This gear set worked great and replaced a broken one in my 2002 1 2 hp chamberlain liftmaster yesterday. This can be replaced in about an hour. 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.

From informational videos to product manuals and troubleshooting articles the chamberlain group resource library has the information you need.