Introduction
In order to access the back of the fan cage and the motor housing, the fan blades must be removed.
What you need
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Unplug your fan.
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Remove the 20 mm bolt that fastens the fan ring located at the bottom of the fan cage with a Phillips #3 screwdriver.
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Remove the 8 mm bolt fastening the fan blades to the rotor with a Phillip #3 screwdriver.
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Almost done!
To reassemble your device, follow these instructions in reverse order.
Conclusion
To reassemble your device, follow these instructions in reverse order.