What is the reason for the abnormal noise when stepping on the brake in D gear of the new Teana?

[OEvangeline]

There is abnormal noise when stepping on the brake in D gear because the ball joint under the gear is severely worn. The function of the ball joint: The ball joint, also known as a universal joint, refers to a mechanical structure that uses a spherical connection to transmit power between different axes. The universal joint is a very important component in a car. The combination of the universal joint and the drive shaft is called the universal joint transmission device. In front-engine rear-wheel-drive vehicles, the universal joint transmission device is installed between the transmission output shaft and the drive axle main reducer input shaft; while front-engine front-wheel-drive vehicles omit the drive shaft, and the universal joint is installed between the front axle half-shaft, which is responsible for both driving and steering, and the wheel. Reasons for ball joint wear: Poor working performance of the release fork shaft and too small clutch travel. Severe wear needs to check the corresponding ball joint movement position, no matter what type of ball joint is severely worn.