Some Experiences in Analysis of Unusual Vibration of Motor Vehicles (4)

4. Judgment of abnormal sound (1) Distinguish whether or not the clutch is abnormal. When the engine is running at a high speed, put the shift lever in the neutral position, and then slowly engage the clutch. If a sound is generated at this time, the clutch is generated. Otherwise, the transmission shaft, transmission or rear axle portion is issued. (2) Judgment of abnormal sound of rear axle. If the locomotive is sounding when climbing uphill, it generally indicates that the meshing position of the main and driven bevel gears of the main decelerator is too close to the root; if the locomotive is sounding when going downhill, it generally indicates the main and driven bevel gears of the main reducer. The meshing position is too close to the tooth root; if the locomotive sounds when descending, it generally indicates that the meshing position of the above gear pair is too close to the top of the tooth; if the locomotive is sounding uphill or downhill, it generally indicates that the bearing is loose or damaged; if there is a metal knock The sound may be broken.

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