"24V DC Cooling Fan" clean stator, stator wash to pay attention and not let the coil contact with alcohol, otherwise the coil appearance of the film will be dissolved, causing the coil damage. The method is to use a very small amount of cotton wrapped around a toothpick, dipped alcohol wipe repeatedly stuffed inside a copper sleeve "24V DC Cooling Fan" stator until clean.
"24V DC Cooling Fan" on the rotor shaft is also a drop until after the alcohol evaporates in the copper sleeve dripping two drops of quality oil, not too much. Because after losing contact with the lubricating oil viscosity adhesive, so the finished oiling use electrical packaging plastic foam seal it.