Slow and weak return of the electric power steering wheel is caused by changes in the four-wheel alignment parameters and damage to the steering gear. Here is how to deal with an improperly aligned car steering wheel: 1. Wheel Dynamic Balance: A car's wheel is an assembly of the tire and rim. However, due to manufacturing reasons, the mass distribution of this assembly cannot be perfectly uniform. When the wheel rotates at high speed, it creates a dynamic imbalance, causing the wheel to shake and the steering wheel to vibrate while driving. To prevent or eliminate this phenomenon, balance weights are added to correct the balance of the wheel edges. This correction process is commonly known as dynamic balancing. 2. Adding Lead Weights: Many attentive car owners may notice small lead weights of varying sizes attached to the edges of the wheel rims. These weights may seem out of place compared to the sleek rims, but they play a crucial role in ensuring stability at high speeds. 3. Four-Wheel Alignment: The installation of the car's steering wheels, steering knuckles, and front axle has specific relative positions. This installation with fixed relative positions is called steering wheel alignment, also known as front-wheel alignment. Front-wheel alignment includes caster, camber, toe-in, and toe-out for the two front steering wheels. Similarly, the rear wheels have their relative installation positions with the rear axle, known as rear-wheel alignment, which includes camber and toe-in for each rear wheel. Collectively, front-wheel and rear-wheel alignment are referred to as four-wheel alignment.
