How to Replace a Gear & Sprocket in Garage Doors

Located in your garage door motor housing are a series of components that help the motor function, including gears and sprockets. If you are having problems with a garage door not opening or closing, it could be the result of a bad gear. You can open up the motor housing on your own and remove and replace a gear and sprocket.

Screwdriver

Instructions

- 1
  Unplug the power cable running from the garage door motor to the power source.
- 2
  Remove the screws holding the motor housing in place and remove the motor housing. You now have access to the internal components, including the gear and sprocket.
- 3
  Remove the pin from the end of the gear to free the gear.
- 4
  Slide the gear off its rod to remove it.
- 5
  Remove the nut on the chain over the sprocket. Slide the chain off of the sprocket.
- 6
  Remove the screws holding the sprocket in place and remove the sprocket.

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