Located at the top of the motor unit the gear and sprocket assembly drives the chain that opens and closes the garage door.
Replacing gears on a craftsman garage door opener.
1 16 of 240 results for craftsman garage door opener gear 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 1 847.
Select the craftsman garage door opener replacement parts you need using the key number on the parts diagram as a reference.
This diy repair guide explains how to replace the gear and sprocket assembly on a chain drive garage door opener.
This is a video on how to change the gear sprockets in a craftsman garage door opener.
This was a craftsman model 139 53976srt.
The gear and sprocket assembly dri.
We have 1 2 hp craftsman garage door opener parts and parts for other models such as craftsman 3 4 hp garage door opener parts.
Fortunately the repair is neither difficult nor expensive and it should only take an hour of your time.
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.
The worm gear attaches to the motor shaf.
This video from sears partsdirect shows how to replace the drive and worm gears on a chain drive garage door opener.
Shredded plastic gears are a common problem with chain driven garage door openers.
Gearkit part 2 liftmaster chamberlain sears craftsman garage door opener.
This video from sears partsdirect shows how to replace the gear and sprocket assembly on a chain drive garage door opener.
If the gear and sprocket assembly breaks the motor runs but the door won t move.