Garage Door Chain Drive Fix

Sprocket is at the end of the opener rail closest to the garage door opening.

Garage door chain drive fix. The chain wraps around this sprocket as well as the gear and sprocket at the motor. A new front sprocket costs about 150 200 include the labor to install it. Tighten the bolts on. If there are some you can use a wood block and your hammer to fix the dents.

Located along the rail the chain an. Slide the pulley toward the garage door until the chain is stretched tight then move it toward the motor until the middle of the chain touches the upper side of the chain arm. Examine the metal tracks on the door for dents or bumps. If the motor hums but the chain doesn t move that indicates a problem with the motor.

Press the remote or the wall mounted start switch listen to the motor and watch the movement of the chain. If you are not confident in your ability to diagnose the problem call a local garage door service company.