As a key conductive component in electrical equipment, the maintenance and repair of brass brushes are crucial. The following is a detailed explanation of the maintenance and repair of brass brushes:

1. Maintenance of brass electric brushes

1）Regularly check for wear and tear:

• Brass brushes will gradually wear out during use, so it is necessary to regularly check their degree of wear.
  

• When the electric brush wears to its extreme position, if the brush has a limit device, the brush will be limited and will detach from contact with the commutator without conducting current. At this time, the electric brush should be replaced in time to avoid adding burden to other electric brushes.

2) Keep the contact surface of the electric brush clean:

• Regularly clean the contact surface of the brass brush to remove impurities such as dust and oil to ensure good conductivity and contact performance
  

• Clean with a clean cloth or brush, and use appropriate cleaning agents if necessary.

3) Check the brush pressure

• The pressure of the electric brush is an important factor in ensuring stable operation of the brush and uniform conduction of current between each brush.

• Regularly check the pressure of the electric brush to ensure it is within the specified range. If the pressure is insufficient or excessive, adjustments should be made in a timely manner.
  

4) Check the contact between the electric brush and the commutator:

• The electric brush should maintain good sliding contact with the commutator to ensure the normal operation of the motor.

• Regularly check the contact between the electric brush and the commutator to ensure good contact and no looseness or gap.
  

5) Avoid overheating of the electric brush:

• During use, attention should be paid to avoiding overheating of the electric brush. Overheating may cause a decrease or damage to the performance of the electric brush.
  

• If the electric brush is found to be overheated, it should be stopped without delay for inspection and the cause should be identified for resolution.
  

  
  

2. Maintenance of brass electric brushes
1) Replace damaged brushes:

• If brass brushes are found to be damaged or severely worn, they should be replaced with new ones promptly.

• When replacing a new electric brush, ensure that the brand and size of the new brush are consistent with the original brush.

2) Grinding electric brushes:

• When replacing a new brush or when the brush wears out to a certain extent, it may be necessary to grind the brush
  

• The purpose of grinding is to make the contact surface of the electric brush smoother, in order to improve conductivity and contact performance.

• Appropriate grinding tools and abrasives should be used during grinding, and the grinding method should be carried out according to regulations.
  

3) Check the brush holder:

• The brush holders are important components for supporting and fixing the electric brush.
  

• Regularly check the integrity and firmness of the brush holders. If damage or looseness is found, it should be repaired or replaced timely.
  

4) Check the electrical connections:

• Regularly check whether the connection between the brass brush and the electrical system is firm and reliable.

• If loose connections or poor contact are found, they should be tightened or repaired immediately.
  

5) Conduct performance testing

• After completing the maintenance and overhaul of brass brushes, performance testing should be conducted to ensure their normal operation.

• Performance testing can include measuring the contact resistance of electric brushes, checking the conductivity of electric brushes, etc.

In summary, the maintenance and repair of brass brushes are crucial for the normal operation of electrical equipment. By regularly checking the wear condition, keeping the contact surface clean, checking the brush pressure, checking the contact condition, and avoiding overheating, the good performance and stability of brass brushes can be ensured. Meanwhile, during the maintenance process, attention should be paid to replacing damaged brushes, grinding brushes, inspecting brush holders, and checking electrical connections to ensure the reliability and safety of brass brushes.