Garage Door Gear Broke Off

This is a video on how to change the gear sprockets in a craftsman garage door opener.

Garage door gear broke off. Located at the top of the motor unit the gear and sprocket assembly drives the chain that opens and closes the garage door. Chain drive garage door openers have a sprocket that is attached at the top of the motor. This is the part that connects the motor to the chain or belt. It will usually run about 200 00 total.

This diy repair guide explains how to replace the gear and sprocket assembly on a chain drive garage door opener. This was a craftsman model 139 53976srt. A new garage door open start around 130 00 plus installation. Garage door openers.

If the gear and sprocket assembly breaks the motor runs but the door won t move. I hope this will help. One of the most common repairs on a liftmaster garage door opener is a broken gear sprocket. After several years the garage door springs become weaker causing more stress on.

This gives the appearance of a broken chain or belt. This can be easily replaced by a garage door service technician. Over time the sprocket s teeth can wear and the chain may jump or skip when the opener raises the door. The most common cause of a chain being loose and appearing broken is a broken gear and sprocket.