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How do I replace a Motor in a Garage Door Opener?

Follow these steps to fix your issue:

  1. Disconnect power

    The power cord and motor unit of the garage door opener can be accessed using a step ladder. The garage door opener needs to be unplugged.

  2. Take the garage door opener down

    To hold the garage door opener during the repair, place a work table under the motor unit. The trolley needs to be released from the garage door. If the garage door isn't already closed, shut it. The straight door arm has a ring on it. The garage door can be disconnected from the outer trolley by pulling out the clevis pin. Place the straight and curved arms against the garage door. The wall control and safety sensor wires are connected to the motor unit. The wall control and safety sensor wires are connected to the motor unit. You will refer to the photo when you connect the wires. The wall control and safety sensor wires need to be disconnected. The light cover needs to be closed. The motor unit is secured with nuts, bolts, and lock washers. Attach the motor unit to the ceiling with one hand. If necessary, use a helpers. Carefully lower the motor unit and secure it on the step ladder. Lower the motor unit on your worktable after climbing down the step ladder. You should move your ladder by the garage door to get to the rail. The clevis pin has a ring on it. Pull the clevis pin out of the rail with one hand. If you want the rail to be level with the motor unit on your table, lower it and rest it on a rung of the step ladder. If you want to avoid scratching a decorative garage door, remove the nuts, bolts and washers from the curved arm and rest it against the door when you disengage the garage door from the outer trolley. When pulling the garage door opener, you may want to have a helpers help you.

  3. Remove the motor

    Light bulbs and light covers should be removed from the motor unit. Remove the screws from the motor unit cover and flip the motor unit over. Pull the gear off after removing the retainer. The RPM sensor wire harness needs to be unplugged. You can release the limit switch locking tabs by squeezing the sides. The limit switch should be moved aside and hung by its wires. The location of the motor wire connections is important. Plug the motor wires from the terminal block. Pull out the motor and motor plate from the bottom screws.

  4. Install the new motor

    Line up the gear and sprocket shaft with the main bearing on the motor plate if you position the new motor and motor plate over the motor unit. Lower the motor and motor plate, threading the gear and sprocket shaft through the main bearing Attach the motor to the motor unit with the bottom mounting plate screws. The motor wires must be connected to the terminal block. The retaining clip is needed to secure the gear and sprocket shaft. If the gear is dry, Lubricate it. If you want to engage the limit switch drive gear with the helical gear, you have to position the limit switch on the motor bracket. Attach the RPM sensor to the motor plate by snapping the mounting posts. Attach the motor unit cover with the mounting screws after plugging in the RPM sensor wire harness. Put the light bulbs and light bulb covers back on the motor unit.

  5. Reinstall the garage door opener

    The rail end should be connected to the brackets using a clevis pin and ring. Set the motor unit on top of the step ladder when you position the ladder under the ceiling. Use nuts, bolts and lock washers to put the motor unit back in the ceiling. The wall control and safety sensor terminals can be accessed by opening the light cover. Attach the wall control and safety sensor wires to the motor unit using your photo as reference. The light cover must be closed. Attach the straight door arm to the outer trolley by using the clevis pin and ring. The trolley must be re-engaged. If you disconnected the curved door arm from the straight door arm while freeing the garage door from the outer trolley, you should use the bolts, lock washers and nut.

  6. Reconnect electrical power

    The garage door opener should be plugged in.

  7. Adjust the travel limits

    To check upper and lower travel limits, run the garage door opener. If the garage door does not completely close, adjust the down travel and cycle the door open and closed to see if the adjustment is right. Continue adjusting the travel until the door closes completely. If the door doesn't open completely, adjust up travel the same way. The motor of the garage door opener can become overheated and shut off if it is continually operated. Allow the motor to cool and then adjust it.

Time required:

60 minutes.

You would need the following tools:

needle nose pliers, nut driver set, socket wrench set, step ladder, work gloves, work table.

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