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What are the symptoms of a damaged control arm?

1 Answers

StAniyah

07/30/25 6:08am

The control arm, also known as the swing arm, functions to balance and support the vehicle. If it affects the balance and causes the vehicle to pull to one side, it indicates that the control arm is damaged. Additionally, if there is excessive wear, it can affect steering control and compromise safety. In such cases, a comprehensive inspection at a 4S dealership is recommended. Extended content: 1. When driving on uneven roads, the tires move up and down, which is facilitated by the movement of the control arm. The tires are mounted on the wheel hub, which is connected to the control arm via a ball joint. 2. The working principle of the control arm is essentially that of a universal joint. It maintains the connection between the driving and driven components even when their relative positions change, such as when the suspension is compressed during steering, causing the A-arm to lift. 3. The control arm is connected to the subframe via a front connecting point hinge sleeve. The forces and impacts experienced by the wheels are transmitted to the vehicle body through this hinge sleeve. The front connecting point hinge sleeve of the subframe is a potential area for cracking. In other words, if a "broken axle" accident occurs, it is highly likely to happen at the front connecting point hinge sleeve of the subframe.

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