If the inner universal joint is broken, there will be a coughing sound when running straight, and when the outer universal joint is broken, there will be a clicking sound when turning.In severe cases, the car will hang up and not move.

　　The role of universal joints on cars:

　　1. The universal joint is a component that realizes the variable angle transmission of power between the rotating shafts.

　　2. Cross-shaft rigid universal joints are widely used in automobiles. Rigid universal joints are used.

　　3. The cross-shaft rigid universal joint has a simple structure, reliable work, and allows a large angle of intersection between the two connected shafts, and is widely used in automobiles.

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