Lubricate a box fan motor step 1 remove the front grill of the fan.
Lubricant for fan motor.
If there is a c clip pry it off first.
Step 2 lay the fan down on a flat surface with the exposed face up.
Do not use any flammable lubricant such as oil.
Add no more than 1 to 2 drops at each oil port.
It is excellent for smaller electric fan motors because it helps to reduce friction when there is a moving surface.
Then remove the fan s blade and wash it with soap.
Fan maintenance it s important in this throwaway society to realize the value of maintenance.
Grasp the blades firmly and lift slowly to remove them.
Apparently wd 40 was the wrong oil to use.
Plus it contains detergent.
It is now so far removed from the way most americans think it.
Then put in a few drops of number thirty oil on both ends of the aforementioned shaft sticking out of the motor.
Whenever you have to lubricate an electric pump bench grinder or other electric motor don t pull just any oil off the shelf.
Don t use automotive motor oil.
First find the point where the shaft is holding the motor and clean that area.
Instead pick up electric motor oil like 3 in one electric motor oil about 3 at amazon.
It not only removes any remaining lube but it can melt coil wires the lightly coated copper wires twisted up in electric motors and cause an electrical short.
The furnace blower motor is going to be working in very hot conditions so the type of lubricant you use is important.
This lubricant oil is produced by liberty oil products and it is a 100 synthetic oil compound.
It s too thin for electric motors.
Then swivel the shaft and cleanup any excess oil.
Step 3 apply a light nondetergent household oil that is sae20.