Failure phenomenon
A car owner complained that when the clutch pedal was released during the starting and shifting process, the drive shaft showed obvious and crisp gold.
is percussion. When the car is driving at high gear and low speed, its noise is continuous and rhythmic.
Fault diagnosis and troubleshooting
The most common cause of abnormal noise in the drive shaft is a defective universal joint. When the bearings of the universal joint are worn and loose, the fitting clearance will become too large. Once the clutch pedal is released, the main and driven parts will collide and make a metal percussion sound when they contact. And when the car is driving at high gear and low speed, because the engine runs unevenly and the transmission shaft shakes, there will be continuous and rhythmic noise at this time. After inspection, it was found that the cross shaft and bearing were seriously worn. Replace the cross shaft and bearing and troubleshoot.