How to clean an electric motor?
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How to clean an electric motor?

Views: 0     Author: Site Editor     Publish Time: 2021-03-18      Origin: Site


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Cleaning dirty electric motors requires the use of small metal and electrical components. Remove the electric motor components carefully to avoid damaging them. It can be removed with degreasing agent or other non-flammable cleaning solution. If you encounter any trouble cleaning the motor, please consider taking it to an electrician for professional repair.

This passage is going to talk about the followings of electric motor:

(1)Preparations of clean your electric motor

(2)Cleaning electric motor steps are as follow

(3)Details of clean your electric motor


(1)Preparations of clean your electric motor

Disconnect the motor and remove it from the mounting frame. Disconnect power to the motor. Power should not flow into the motor, otherwise it will cause electric shock. Loosen all bolts holding the motor in place.

If you think there is a charge, you can test the motor with a multimeter.

Disconnect the wires from the terminals. Look at the outside of the motor to find the wires that connect it to other components in the electrical system. They are usually bright red, black or blue, so they should be easy to spot. Use a wrench to twist the wires to separate them from the terminals.

Please note the location of the wires so that you can reconnect them later. You may need to take photos to help solve this problem.

 electric motors

(2)Cleaning electric motor steps are as follow

Use a puller to remove the pulley. Find the gear shaft, which is a metal rod that extends from one of the ends of the motor. The pulley is a small part that looks like a wheel at the end of the shaft. Grasp the pulley with the claws of the puller, and then pull it out of the shaft.

You can buy pullers at most hardware stores.

Mark the end bell with a center punch. At both ends of the motor, you will find a round housing, usually made of PVC. These tail bells need to be accurately repositioned later, and marking them now makes things much easier. Fix the center punch on the outside of each end cap, and then hit it with a hammer to form a small mark.

Mark 1 mark on the end cover under the pulley, and then mark 2 marks on the opposite end cover.

Your motor may also have a long metal tube called a housing. They are located behind the bell. Mark them in the same way.

Use a socket wrench to unscrew the bolts from the end caps. Each bell jar may have 8 bolts. Find one set of bolts in the center, and then another set of bolts around the outer rim. You need to use a socket wrench to turn these screws counterclockwise to loosen and remove them.

Depending on your motor, you may need to use a socket wrench or screwdriver.

Hit the bell with a soft hammer and screwdriver. The soft-face hammer has a plastic, wooden or lead head. Wedge the screwdriver between the bell and the motor. It should be located on the side closest to the motor. Then, hit the screwdriver with a hammer until you can pull the bell off the motor. Remember to grab two bells, including the bell opposite the pulley.

Remove the end of the motor and the starter switch. The starter switch will be located at the pulley end of the motor. It will be behind the end bell and shell. You will see many copper connections. Carefully pull out the metal piece that secures the wires, being careful not to break any wires.

If your motor does not have a start switch, it will have a brush housing, which is a horizontal tube. Look for the copper wire harness.

Pay attention to the location and number of all gaskets. The gasket is a flat metal piece that looks like a two-pronged fork.


(3)Details of clean your electric motor

Wipe off the dirt on the outside of the motor with a rag. Avoid wetting, because you don't want to get water in electrical parts. If the motor is still very dirty, you can try a commercial degreaser. Brush off the dirt on the wiring area of 220 to 240 grit sandpaper. Use only very fine sandpaper to treat the area around the copper wires in the starter switch or brush housing. Gently wipe the metal parts to wipe off any debris you see. Avoid using water or chemicals to clean the area. Clean the inside of the motor with a rag and degreaser. Choose a non-flammable cleaning fluid, such as a degreaser that you may have used on the motor housing. Dampen a clean cloth with the product, and then use it to wipe off any debris from the area that may be touched.

Reinstall the wires in the switch or brush ring. When removing these parts, you may lose some wires. Wind the wires around each other into a coil, and put the wires back inside. Take care to avoid damaging them.

Replace parts removed for cleaning. Starting from the front end, install the rotor, which is a striped thick metal sheet on the shaft. You will see a metal ring with a ball bearing, and you can add a drop of oil to it to lubricate the part. Then, slide the housing and end cap on the shaft. Finally, assemble your electric motor.


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