Inflatable Air Blower failure how to do?

"Inflatable Air Blower" sounds more and more, because the fan due to lack of oil bearing, bearing bore is worn - the gap between the shaft and bearing fan is too large, and the axial gap is too big fan activities, fan the blades can be moved back and forth a few millimeters. "Inflatable Air Blower" made after the axial movement of the rotation, and the rotation of the blades are flat rock, not only wear more and more intensified, while generating a lot of noise. The vast majority of fan failures are due to this reason. Although for a new "Inflatable Air Blower" The easy, but the one does not meet the DIY spirit, two to not necessarily be able to immediately be able to find a substitution models. Of course there is not a fan of this failure can not be repaired, and now introduce a repair approach.