The process isn t as hard as you may think so consider the guide below.
Garage door chain sprocket replacement.
If you replace the sprocket assembly in your chain drive garage door opener yourself you may be able to save a lot of money.
Step 1 turn off the power.
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.
Located at the top of the motor unit the gear and sprocket assembly drives the chain that opens and closes the garage door.
This was a craftsman model 139 53976srt.
If the gear and sprocket assembly breaks the motor runs but the door won t move.