This diy repair guide explains how to replace the gear and sprocket assembly on a chain drive garage door opener.
Garage door chain sprocket replacement.
Over time the sprocket s teeth can wear and the chain may jump or skip when the opener raises the door.
Chain drive garage door openers have a sprocket that is attached at the top of the motor.
This was a craftsman model 139 53976srt.
Step 1 turn off the power.
If you replace the sprocket assembly in your chain drive garage door opener yourself you may be able to save a lot of money.
This is a video on how to change the gear sprockets in a craftsman garage door opener.
Located at the top of the motor unit the gear and sprocket assembly drives the chain that opens and closes the garage door.
Https amzn to 2uwvnkj i m working on a chain drive opener.
This gear kit on amazon.
The process isn t as hard as you may think so consider the guide below.