The front leaf springs have been replaced on a vehicle. Which of the following operations must also be performed?

Replacing the front leaf springs on a vehicle affects the vehicle's suspension geometry. When new springs are installed, they can change the ride height and weight distribution of the front end, which can lead to misalignment of the wheels. Proper alignment ensures that the tires wear evenly and the vehicle handles correctly.

Wheel alignment involves adjusting the angles of the wheels to the manufacturer's specifications, which can include camber, caster, and toe adjustments. If the alignment is not checked and corrected after spring replacement, it can result in uneven tire wear, compromised handling, and potential safety hazards. This is why performing a vehicle alignment is a necessary follow-up operation after changing the front leaf springs.