The drive motor operates the trash compactor press, also known as a ram, that helps compact the trash. When in use the drive motor will activate the press by turning the gears and a chain, causing it to lower into the trash, compact it and then raise back up. If your compactor is noisy or not compacting, you may need to replace the motor. This is a genuine OEM part. Please remember to disconnect the power to the trash compactor before starting the repair.