Garage Door Opener Sprocket Sheared Off

Located at the top of the motor unit the gear and sprocket assembly drives the chain that opens and closes the garage door.

Garage door opener sprocket sheared off.

The gear will cost about 50 00 with shipping and then the cost of having someone install it. This can be replaced in about an hour. The silentmax connect smart garage door opener features a genie steel reinforced belt making it very quiet and the ideal choice for garages attached to living spaces. The bag said it was an oem piece.

It was a perfect replacement and the garage door is working. 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. The replacement of this part is relatively straight forward and the instructions that come with the part part number 41c4220a are clear. It will usually run about 200 00 total.

041c4220a is a complete chain drive gear and sprocket replacement kit. This gear and sprocket assembly is compatible with various chain drive garage door openers. This diy repair guide explains 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.

Over time the sprocket s teeth can wear and the chain may jump or skip when the opener raises the door. This gear set worked great and replaced a broken one in my 2002 1 2 hp chamberlain liftmaster yesterday. A new garage door open start around 130 00 plus installation. Helical gear and top hat assembly worm gear wear bushings grease and hardware needed to replace the chain drive gears.

I had to replace the gear and sprocket assembly after the sprocket got sheared off likely due to too much play in the chain. Chain drive garage door openers have a sprocket that is attached at the top of the motor. It wasn t listed for the same model but after looking online it seems that most garage door openers made after 1984 use the same sprocket assembly. This was a craftsman model 139 53976srt.

This is a video on how to change the gear sprockets in a craftsman garage door opener. Chain driven garage door openers should have some slack in the chain for optimal performance. Garage door openers. Over time though this slack can increase or the gear and sprocket assembly can wear and the chain may pop off the sprockets.