Why is a 4-wheel alignment necessary?
1 Answers
Reasons for performing a 4-wheel alignment are as follows: 1. Eliminate the adverse effects caused by wheel camber. Wheel camber causes the front wheels to have a tendency to spread outward. Due to the constraint of the axle, they cannot roll outward, leading to the wheels both rolling and sliding, which increases wear. 2. Proper toe-in ensures that the rolling direction of the wheels at every moment is close to straight ahead, reducing the pressure on the wheel hub's outer bearings and tire wear. Principles and steps of 4-wheel alignment: 1. First, adjust the steering angle. The principle of steering angle is to ensure that the angles of turning left and right are the same, guaranteeing equal steering angles in both directions to avoid situations where the left turn angle is larger than the right. Adjustment method: Adjust the relative position of the steering wheel on the steering column to ensure that the number of turns and the angle of the final half-turn are the same when turning left and right. 2. Place the vehicle on a 4-wheel alignment machine and fix the steering wheel in the horizontal straight position, i.e., the position where the car drives straight forward. 3. Adjust the camber angle: The principle of camber angle is to ensure the correct contact surface between the tire and the ground, preventing uneven tire wear. Adjustment method: Loosen the two camber adjustment ball joint screws on each side of the subframe (these are locking screws; it is best to replace them after loosening). Based on the alignment machine data, adjust by generally moving the tire inward. 4. Adjust the toe-in: The principle is to ensure the car has a certain automatic steering return function and maintains the ability to drive straight forward.
