Fortunately the repair is neither difficult nor expensive and it should only take an hour of your time.
Garage door opener drive gear replacement.
Follow the steps in this repair guide and video to replace the gear and sprocket assembly in craftsman chamberlain and liftmaster chain drive garage door openers.
So if you suddenly find that the motor on your garage door opener sounds like it s running but the door is not moving checking for worn gears is the first thing you should do.
Kipa pack 3 drive gear for sears crafsman liftmaster chamberlain garage door openers 1984 up 41a2817 41c4220a 81b0045 drive gear 32 teeth bore size 1 2 durable top quality 4 7 out of 5 stars 37 9 75 9.
This was a craftsman model 139 53976srt.
If the gear and sprocket assembly breaks the motor runs but the door won t move.
The drive gear is designed as a sacrificial part and will shred when ever unusual stress or strain is placed on the door or opener.
Kipa pack 3 drive gear for sears crafsman liftmaster chamberlain garage door openers 1984 up 41a2817 41c4220a 81b0045 drive gear 32 teeth bore size 1 2 durable top quality 4 7 out of 5 stars 14 9 75 9.
Genuine genie replacement belt and chain drive sprockets main drive gears and more.
This is a video on how to change the gear sprockets in a craftsman garage door opener.
Replacement gears and sprockets for genie model garage door openers.
See full descriptions for garage door opener compatibility by model numbers.