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CLEANING Clean fan blades using soap and water only. Use extreme caution when cleaning fan blades on an electric cooling fan, DO NOT allow the cleaning mixture to enter the electric motor of the cooling fan. INSPECTION WARNING: DO NOT ATTEMPT TO BEND OR STRAIGHTEN FAN BLADES IF NOT WITHIN SPECIFICATIONS. CAUTION: If fan blade assembly is replaced because of mechanical damage, water pump and viscous fan drive should also be inspected. These components could have been damaged due to excessive vibration.