Written by Chinplus
Repairing electric motors can seem like a daunting task. DC electric motors are usually small motors that exist inside much of our electronic equipment and vehicles. To repair a DC motor is much easier than one may think. There are usually just a few components that need changing and oiling!
Open the DC motor. There are usually screws that you'll have to unscrew, or metal tabs that will have to be pried away. Pay careful mind to the brushes that are connected to the electrical wires coming out of the motor. If you can pull them back (on larger DC motors) do so.
Remove the inner coil that is connected to the spindle out of the motor.Ā Be careful when you do this because you are trying to repair an electric motor & if you damage the brushes or other parts, you may further break the motor.
Inspect the brushes for wear. If the motor brushes are worn down, burned or chipped you will need to contact the manufacturer for the motor and order a new brush set.
Inside the motor housing, look for the area where the spindle sits. There will be a ball bearing set or a smooth tubing made of metal. Apply household 3 in 1 oil to the bearings or metal tubing. Also on the coil spindle, look for signs of wear on the spindle shafts. Apply oil where you see wear.
Re-assemble the motor paying special mind to the brushes and getting them aligned correctly again. Screw the screws back in or re-bend the metal holding tabs back into place.
Apply the correct voltage to the motor to test it.Ā If it works you have repaired the electric motor!