Fan

1 Turn your fan on to make sure that the motor works: Plug your fan in and turn it on to the highest power setting. If the fan blades move a little or it starts to turn, the motor is probably still good. If you don’t hear anything, put your ear up to the middle of the case behind the blades.
2 Unplug the fan and either unhook the blade guard or unscrew the pin: Pull the fan’s electrical cord out to keep it from turning on randomly while you’re working on it. Feel around the sides of the blade guards for clips that are holding the 2 parts together. If there are clips, unhook them and remove the front half.
3 Lubricate: Lubricate the central pin and bearings.
4 Clean: Clean out the vent and motor case.