How to Change the Carbon Brushes of a Washing Machine

Jul 10, 2023, 16:03pm

The motor brush, which is also called a brush, is a part used to supply the rotating part of the motor with electric current. This feeding is due to friction.

The brushes of a washing machine are used in particular to vary the spin speed. The role of washing machine motor brushes is therefore to provide energy to the motor rotor.

The motor carbon is a parallelepiped-shaped piece of graphite. A coal is in good condition and in function if it is long. If it measures only 1 cm or less, it must be replaced.

The carbon brushes are defective if:

  • your washing machine motor is not turning
  • the washing machine does not turn on at all
  • spinning is done randomly
  • the drum turns little or not at all
  • you hear crackling sounds when washing
  • you observe sparks during washing

The carbon brushes are located at the rear of the washing machine. The part of the brush that touches the rotating part of the motor is often bevelled. This is why it is necessary to identify the side where the worn carbon brush is placed before replacing it.

Motor brushes are often delivered in pairs, so it is best to change them together.

The carbon brushes in a washing machine are essential components that make contact with the motor’s commutator, allowing it to rotate and power the drum. Over time, the carbon brushes can wear out, leading to motor malfunctions, reduced performance, or even a complete failure of the machine. If you notice unusual noises, poor spinning, or if the motor fails to start, it may be time to replace the carbon brushes. Fortunately, changing the carbon brushes is a relatively simple task that can be done with the right tools and careful attention. In this guide, we will walk you through the steps to change the carbon brushes of a washing machine.

How to Change the Carbon Brushes of a Washing Machine

Safety Precautions

Before starting any repair work on your washing machine, it is important to prioritize safety. Always unplug the machine from the power source before attempting any repairs. Additionally, ensure you are working in a well-lit area and wear protective gloves to prevent injury.

Tools Required

To change the carbon brushes of a washing machine, you will need the following tools:

  • Screwdriver set (Phillips or Torx, depending on your machine)
  • Pliers
  • Towels or rags (to protect the floor and clean up any spills)

Steps to Change the Carbon Brushes

Follow these steps to change the carbon brushes of a washing machine:

Step 1: Unplug the Washing Machine

Ensure the washing machine is disconnected from the power source by unplugging it from the wall socket.

Step 2: Locate the Motor

The motor and carbon brushes are typically located at the bottom or rear of the washing machine. Remove any covers or panels that are obstructing access to the motor. Consult your washing machine’s user manual or search online for specific information about accessing the motor and carbon brushes in your particular model.

Step 3: Identify the Carbon Brushes

Once you have access to the motor, locate the carbon brushes. They are usually connected to the motor via wires and held in place with spring clips or screws. Take note of the position and orientation of the carbon brushes before removing them.

Step 4: Remove the Old Carbon Brushes

Using pliers, gently pull the carbon brushes away from the motor, being careful not to damage the wires or surrounding components. If the carbon brushes are held in place with screws, use a screwdriver to remove them.

Step 5: Install the New Carbon Brushes

Take the new carbon brushes and ensure they are the correct size and shape for your washing machine’s motor. Align the brushes correctly with the motor’s contact area, making sure the wires are positioned correctly. If necessary, consult the manufacturer’s instructions or the old carbon brushes for guidance.

Step 6: Secure the New Carbon Brushes

If the new carbon brushes are held in place with spring clips, carefully insert them into the motor and press them against the commutator. If screws are used, tighten them securely to hold the carbon brushes in place.

Step 7: Check Brush Length and Spring Tension

Ensure the new carbon brushes have sufficient length and spring tension. The brushes should make good contact with the commutator and have enough pressure to maintain consistent contact during operation. If needed, adjust the position or tension of the carbon brushes to ensure proper functionality.

Step 8: Reassemble the Washing Machine

Once you have completed the carbon brush replacement, reassemble any covers or panels you removed earlier to access the motor. Use the appropriate screws to secure these components back in place.

How to Change the Carbon Brushes of a Washing Machine

Step 9: Test the Machine

Plug your washing machine back into the power source. Turn it on and run a test cycle. Observe the motor’s performance, listening for any unusual noises or issues. Ensure the drum spins smoothly and evenly. If the machine operates correctly without any problems, it indicates that the new carbon brushes are properly installed.

If you encounter any persistent problems or suspect a fault with the motor or carbon brushes despite the replacement, it is recommended to consult a professional appliance repair technician or contact the manufacturer for further assistance.

In conclusion, changing the carbon brushes of a washing machine is a relatively simple task that can significantly improve the performance and lifespan of the machine’s motor. By following these steps and using the appropriate tools, you can successfully replace worn-out carbon brushes and restore the proper functioning of your washing machine. Always refer to your washing machine’s user manual for specific instructions and guidelines, as different models may have slight variations in the carbon brush replacement process. Regular maintenance and prompt carbon brush replacement will help ensure the optimal performance of your washing machine.

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