How to replace carbon in Washing Machine Motor

by Sanjay Diwan

Carbon brushes are essential components in the motor of a washing machine. They conduct electricity between stationary wires and moving parts, ensuring the motor runs smoothly. Over time, these brushes wear out and need replacement. You can follow following steps to change the carbon brushes in your washing machine motor.

Tools and Materials Needed

  • New carbon brushes (specific to your washing machine model)
  • Screwdrivers (Phillips and flathead)
  • Pliers
  • Multimeter (optional)
  • Work gloves
  • Flashlight
  • Cleaning cloth

 

Safety First

  1. Unplug the Washing Machine: Ensure the washing machine is disconnected from the power supply to prevent any electrical accidents.
  2. Turn Off Water Supply: Close the water valves to avoid any leaks or spills.

Steps

  1. Access the Motor:

    • Remove the Back Panel: Use a screwdriver to unscrew the bolts holding the back panel of the washing machine. Keep the screws in a safe place.
    • Locate the Motor: The motor is typically found at the bottom of the washing machine. Use a flashlight if necessary.

  2. Disconnect the Motor:

    • Remove the Drive Belt: Slide the drive belt off the motor pulley.
    • Unplug the Wires: Carefully disconnect the wires attached to the motor. Take a photo or make a note of where each wire goes to ensure correct reassembly.
    • Unscrew the Motor: Use a screwdriver to remove the screws or bolts securing the motor to the washing machine frame. Carefully take the motor out.

  3. Locate and Remove the Carbon Brushes:

    • Find the Brush Holders: The carbon brushes are housed in brush holders on either side of the motor.
    • Remove the Brushes: Use a screwdriver to gently lift the clips or unscrew the caps holding the brushes in place. Pull out the old brushes.

  4. Install the New Carbon Brushes:

    • Insert the New Brushes: Place the new carbon brushes into the brush holders, ensuring they are positioned correctly and making good contact with the commutator.
    • Secure the Brushes: Reattach the clips or screw the caps back on to secure the brushes in place.

  5. Reassemble the Motor and Washing Machine:

    • Reattach the Motor: Place the motor back in its position and secure it with the screws or bolts.
    • Reconnect the Wires: Plug the wires back into their respective terminals, referring to your notes or photo.
    • Replace the Drive Belt: Slide the drive belt back onto the motor pulley.

  6. Test the Motor:

    • Manual Spin Test: Before reassembling the washing machine, manually rotate the motor pulley to ensure the brushes are correctly installed and there are no obstructions.
    • Power Test: Plug the washing machine back in and run a short cycle to test the motor operation. Listen for smooth operation without excessive sparking or noise.

  7. Reassemble the Washing Machine:

    • Reattach the Back Panel: Once satisfied with the motor’s performance, screw the back panel of the washing machine back into place.
    • Turn On the Water Supply: Reopen the water valves.

Maintenance Tips

  • Regular Inspection: Check the carbon brushes periodically, especially if you notice the motor making unusual noises or not running smoothly.
  • Keep Spare Brushes: Having an extra set of carbon brushes on hand can save time when replacements are needed.

Changing the carbon brushes in your washing machine motor can extend the life of the machine and ensure it runs efficiently. 

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