How to Replace Automatic Garage Door Opener Gear Sets How to Replace Automatic Garage Door Opener Gear Sets

What You'll Need
New Gear Set
Punch
Hammer
Screwdriver
Socket Wrench
Nut Driver
Step Ladder

Owning an automatic garage door opener is a great convenience when you need to open the garage door but do not want to get out in the cold or rain. The automatic garage door opener is also great for doors that are very heavy and hard to open. Like other appliances, there are times when the garage door opener will have some problems. These problems can range from easy to fix, to moderately involved, to having to replace the opener entirely. When a gear set goes then the door will not open properly. It will slip and even fail entirely. Changing the gear set in the automatic garage door opener is a moderate project that will take some time.

Step 1: Unplug Automatic Garage Door Opener

The first step to changing the gear set is to unplug the garage door opener. This is a safety precaution that can save you a very serious injury if your hands are in the gearing when someone accidentally hits the garage door opener. If the garage door opener is hard wired into the electrical system of your home, then you will need to turn the breaker off for the garage area.

Step 2: Set up Ladder

Reaching over your head is not going to be a very comfortable position when working on the garage door opener. Position a step ladder, preferably 8 foot, next to the garage door opener. You should be able to go high enough to be level with the opener for ease of work.

Step 3: Remove Cover and Light

To get at the gearing set you will need to remove the front cover and light. Use a screwdriver and loosen the screws that hold the cover on. Set it aside so it does not get lost or broken. Unscrew the light from the socket and set aside.

Step 4: Remove Motor Housing

Once the front cover is removed, you will be able to see a few screws that hold the motor housing together. They can be screws, or bolts. Whichever they are, use the appropriate screwdriver, nut driver, or socket wrench to loosen and remove them. Make sure to hold onto the housing so that it does not fall to the floor. Once the screws are removed, set the case aside.

Step 5: Disconnect Gear From Shaft

The shaft will need to be disconnected from the gear set in order to remove them. Depending on the type of garage door opener you have, this can be several different ways. Consult the specific manufacturer's manual for instructions on how to disconnect this piece.

Step 6: Remove Gear Set

The gear set will be held in place by two pins. They are best removed by using a small punch that is slightly smaller than the pin's diameter. Set the punch over the pin and use a hammer to tap the pin out. Repeat with the other pin. Once these pins are removed, you can remove the gearing.

Step 7: Install New Gears

Coat the gears lightly with some machine oil and place them into position. Drive the retaining pins back into position and connect the shaft.

Step 8: Re-Install Housing and Light

Once the gears are installed, re-connect the housing and the light bulb. Secure the light cover back on and plug the automatic garage door opener back in.

 

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