First of all, the universal joint on the drive shaft can transmit power normally and reliably when the relative position of the transmission output shaft and the final drive input shaft changes (changes within a certain range) under such road conditions.Secondly, the universal joint can make the two shafts run evenly.The universal joint can also change the angle between the two shafts, and enable the two shafts to perform constant angular speed transmission.

　　1. After stepping on the clutch pedal, be careful not to lift it up suddenly.

　　2. The overloading and overspeeding behavior of the car will damage the drive shaft.

　　3. Don't use high gear to start, and develop good driving habits.

　　4. Check the transmission shaft regularly to check whether the transmission shaft is deformed and whether the places connected to the transmission shaft are loose or not.

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