Rob's web

Bearing oiler

To reactivate a noisy or sluggish electric clock, blower or other device with a sealed rotor or bearing, heat the unit in a moderate oven. Then, while it is cooling, place a few drops of oil around the output shaft or gear. The contracting air inside the sealed compartment will inhale the oil through the bearing and restore normal operation.

Charles Kram, jr., W5TFZ.