Neighborhood Garage Door Service

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How Do I Replace Garage Door Gears?

Neighborhood Garage Door Repair knows how important it is to have knowledge when it comes to your garage door. There is plenty of maintenance that can be done by you without the need of an expert. We want to ensure that you are confident in the work you put into your garage.

A common issue you will find with chain-driven doors is that the plastic gears can shred. Lucky for you, the repair is not an expensive fix and won’t take up much of your time. If the motor on your door starts to sound like it is running and the door isn’t moving, you should check for worn gears.

Preparing For The Change

To start the replacement, you will want to unplug the garage door opener to ensure that there is no power going to it. You will then pull the emergency release rope and then you will need to manually shut the garage door. Remove the garage door opener cover and you are ready to get started.

Inspecting The Gears

When you look at the white plastic gears, are they worn down or shredding? If you find this to be the case, replacing is the right answer. A quick internet search should tell you the make and model of your opener and the correct type of new gear kit you should need.

Online retailers will have kits ranging from $18-$30, but if you are in immediate need of a kit, a local garage door dealer should have one for you. Your kit should include two gears, washers, and a tube of grease. Some kit will have detailed instructions and others might not have any, which is when this tutorial will come in handy.

If you are experiencing the noise and the gears seem to be in good condition, a more serious problem might be going on. This would be the time to call a professional repair person to get their opinion. If that is the case, you might even just replace the entire unit, costing not much more than you would pay a professional.

Tools You Might Need

When replacing your gears, here are some tools you might need.

  • ⅜-inch socket or nut driver
  • ¼-inch nut driver
  • 5/16-inch nut driver or socket, with an extension
  • ⅛-inch Allen wrench
  • A hammer
  • Flathead screwdriver
  • 5/32-inch punch

Circuit Board

Some openers will give you extra room to work if you loosen the circuit board. Simply remove the screws and allow the board to hang out of the way. Check the type of opener you have to ensure this is an option for you.

Loosening The Chain

The chain attached to the tensioning rod will need to be loosened. You will use a wrench to loosen the nut that is attached to the rod. You might need a second wrench to prevent the chain from turning too.

Removing The Gear Assembly

Remove any screws that are holding the gear assembly in place. Next, you will lift the entire assembly out of the unit and remove the helical gear from the shaft. It is held in place by a pin and can be removed by tapping a small punch with a hammer.

If you have any trouble removing the pin, you can spray some lubricant on an let it soak for a while. You can then loosen the set screws that are on the collar with a hex wrench in order to remove the worm gear that is attached to the motor shaft. Slide the gear off, then the washers, then remove the retaining screws that are on the motor.

Reassembling The Gear Assembly

You will now attach the new worm gear onto the shaft. Reassemble and replace the motor in the reverse order that you removed. Now is when you will install the new helical gear. Put a thin layer of the included grease.

Once the gears are back in place, you will tighten the chain just as it is directed in your owner’s manual. Place the cover back on the opener, plug it in, and you should have a functioning garage door opener. If you find it isn’t working correctly or still is making noise, you can recheck your steps or call a professional.

Give Us A Call

We are always available to help you with your garage door needs. If you have done any work to your garage door and find there might still be a problem, give Neighborhood Garage Door Repair a call. Our friendly staff is waiting for your call!

You Can Trust Us for the Job

positive reviews

They sent Doug Fussell out to my house on the day after Christmas! I had only called them three days before! Doug was a premier technician, very thorough and very efficient. I expected him to take two days, since he was replacing two doors and adding openers on each door. He only took the daylight hours of one day! I could not believe how fast he was! In addition, he thoroughly taught me how to use the remote openers. I highly recommend them to anyone!
~Donald B.

positive reviews

We just bought a home and this company was so understanding as I had to change the appointment time a few times. Then the tech came out and was so kind and helpful. I could not have asked for a better experience and will suggest them to anyone who needs work done on their garage door!
~Tammy K.

positive reviews

My garage door broke on a Saturday night as I was getting ready to leave for a holiday party. Kelvin was here within 30 minutes. He reviewed everything with me that was happening with my door. He gave me the estimates of what was immediately needed to be done in order for my door to raise and then what I will need to have done very soon. I could see all the problems he pointed out to me and I decided to have everything done. He completed everything that night. I was very satisfied with Kelvin’s professionalism and the work he did. Thank you again.
~Joyce N

We Service All Makes and Models of Garage Doors and Openers