The wash pump motor is mounted under the dishwasher and spins the wash pump. When a wash pump motor is malfunctioning, it will make a loud noise. There may be problems with cleaning due to the decreased spray pressure. The pump motor needs to be replaced if it's bad. The motor can usually be removed from the dishwasher tub. When the new wash pump motor is installed, it is a good idea to replace the water seals as well.
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