The investigation processes and results of the electric locomotive steps fracture were presented. A locomotive suffered from serious vibration problem was chosen for the test and its normal operations were kept during the test. The wheel out-of-roundness (OOR) and vibrations of key components including the step. the axle box. https://www.ngetikin.com/quick-offer-1-Gallon-Universal-Primer-Pro-Deep-Penetrating-Primer-big-deal/