[Working principle of car control arm]:

The car control arm connects the wheel and the body, bears the weight of the wheel and the reaction force of the road, and adjusts the position of the wheel to ensure the driving stability and controllability of the vehicle.

[Maintenance method]:

1. Regular inspection: Regularly check whether the control arm is damaged or corroded.

2. Cleaning and maintenance: Clean the surface of the control arm regularly to avoid corrosion and dirt accumulation.