Garage Door Chain Sprocket Replacement

Step 1 turn off the power.
Garage door chain sprocket replacement. This was a craftsman model 139 53976srt. Chain drive garage door openers have a sprocket that is attached at the top of the motor. This diy repair guide explains how to replace the gear and sprocket assembly on a chain drive garage door opener. If you replace the sprocket assembly in your chain drive garage door opener yourself you may be able to save a lot of money.
If yours is a belt drive you need a kit like this https amzn to 2zqns. Https amzn to 2uwvnkj i m working on a chain drive opener. The process isn t as hard as you may think so consider the guide below. This gear kit on amazon.
This is a video on how to change the gear sprockets in a craftsman garage door opener. Amazon s choice for craftsman garage door sprocket replacement for liftmaster 41c4220a gear and sprocket kit fits chamberlain sears craftsman 1 3 and 1 2 hp chain drive models 4 8 out of 5 stars 1 216.