This diy repair guide explains how to replace the gear and sprocket assembly on a chain drive garage door opener.
Garage door opener sprocket sheared off.
This gear set worked great and replaced a broken one in my 2002 1 2 hp chamberlain liftmaster yesterday.
The gear will cost about 50 00 with shipping and then the cost of having someone install it.
This garage door opener has a powerful dc motor with geniesense technology standard.
This was a craftsman model 139 53976srt.
It will usually run about 200 00 total.
The stealthdrive 750 belt drive garage door opener the stealthdrive 750 belt drive garage door opener is an ultra quiet garage door opener with a steel reinforced belt making it the ideal choice for homeowners where sound could be an issue.
Chain drive garage door openers have a sprocket that is attached at the top of the motor.
You can put the chain back on your automatic garage door opener using a simple adjustment mechanism.
The bag said it was an oem piece.
041c4220a is a complete chain drive gear and sprocket replacement kit.
Helical gear and top hat assembly worm gear wear bushings grease and hardware needed to replace the chain drive gears.
Garage door openers.
Chamberlain 1 25 hp myq secure view and ultra bright smart belt drive garage door opener with myq and wi fi compatibility and battery back up and led light and camera s item 1630354 model b6765.
It was a perfect replacement and the garage door is working.
I hope this will help.
A new garage door open start around 130 00 plus installation.
Over time though this slack can increase or the gear and sprocket assembly can wear and the chain may pop off the sprockets.
Chain driven garage door openers should have some slack in the chain for optimal performance.
This gear and sprocket assembly is compatible with various chain drive garage door openers.
Over time the sprocket s teeth can wear and the chain may jump or skip when the opener raises the door.
This is a video on how to change the gear sprockets in a craftsman garage door opener.