The function of the horns at the front of a car
The front knuckle (steering knuckle) of a car is a core component of the car's steering system. Its main function is to transmit steering torque, support the weight of the car's front end, and achieve wheel steering. The following are the specific functions:
Transmit steering torque
Connect the ball pin and the tie rod to transfer the steering torque of the steering wheel to the hub, causing the wheels to deflect to achieve steering.
Support the weight of the front of the vehicle
Bear the load at the front of the vehicle while buffering the impact of the road surface to ensure driving stability.
Realize the steering function
Through the main pin installation hole structure, the front wheels rotate around the main pin to complete the steering action.
Safety-critical components
If damaged, it may lead to serious safety hazards such as steering failure and wheel detachment, and regular inspection and maintenance are required.
When the front knuckle (professionally known as steering knuckle) of a car is damaged, it will cause a series of symptoms that affect driving safety and driving experience, mainly including abnormal wear of tires, difficulty in steering, steering wheel vibration, brake vibration, abnormal body noise and vehicle deviation , etc. These symptoms stem from the functional failure of the horn, a core component connecting the wheels and suspension, which directly interferes with the vehicle's steering, braking and stability systems.
Abnormal tire wear and vehicle deviation
Damaged horns can lead to inaccurate four-wheel alignment, changing the contact state between the tires and the ground, resulting in the " tire wear" phenomenon (i.e., severe local wear of the tires), which greatly shortens the lifespan of the tires. At the same time, the vehicle will unconsciously veer to one side while driving, making it difficult to maintain a straight line and accelerating the uneven wear of the tires.
Steering system anomaly
Youdaoplaceholder0 Difficulty in steering : The horn fault disrupts the smoothness of steering, increases the resistance of the steering wheel rotation, and makes handling heavy.
Youdaoplaceholder0 steering wheel vibration and poor return : Irregular movement of the steering system can be transmitted to the steering wheel, especially when driving at high speed, the vibration is more obvious. After turning, the front wheels may not automatically return to the center position, affecting the handling accuracy.
Braking and driving stability issues
Damaged horns can interfere with the force balance of the braking system, causing obvious shaking of the vehicle body and pedals during braking. In the long term, it may affect the braking effect. In addition, the stability of the suspension system declines, making the vehicle prone to vibration or swaying during driving, and the risk is even higher at high speeds.
A malfunction of the front horn of a car can cause symptoms such as abnormal tire wear, difficulty in steering, steering wheel vibration, brake vibration, and abnormal body noise . It needs to be repaired in time to ensure driving safety.
Typical symptoms
Abnormal tire wear: Uneven wear or tire wear occurs on the tires, and the tire's landing condition is affected due to horn faults.
Difficulty in steering: The steering wheel is heavy or the steering response is sluggish, and the balance of the steering system is disrupted.
Steering wheel vibration: The steering wheel vibrates during driving, especially when braking or at high speeds.
Abnormal noises from the vehicle body: Unusual sounds occur when turning, which may be accompanied by friction or collision sounds.
Vehicle deviation: Four-wheel alignment deviation causes the vehicle to veer to one side during driving, intensifying the uneven wear of the tires.
Common causes
Collision or impact: Direct damage to the sheep's horn structure caused by traffic accidents or violent collisions.
Long-term wear and tear: Fatigue damage to components caused by frequent use or poor road conditions.
Overloading or poor road conditions: Long-term exposure to excessive loads or bumpy roads accelerates aging.
Solution
Minor issues: They can be corrected and repaired through grinding, but there are potential risks in the future.
Serious issue: New horns need to be replaced to ensure compatibility and safety.
Maintenance suggestion: Choose a regular repair shop and have it operated by professionals to avoid handling it yourself.
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