The technician's first
step when aligning your car is to inspect for damaged or worn out parts that
will prevent proper alignment of the car.
Then he measures the car's current alignment
measurements and angles. This is done by mounting an electronic sensor
on each of the car's four wheels. The sensors use infrared beams to
measure the position and angle of each wheel and determine exactly in which
direction each wheel is pointing. A car severely out of alignment may
have all four wheels pointing in different directions. As the technician
steers the wheels to various positions for a complete set of alignment
measurements, the sensors send the information to the aligner's computer
console. The computer compares your car's current alignment measurements
to the manufacturer's (O.E.M.) specifications in its database.
The aligner then provides the technician with the exact
information he needs to adjust your car's alignment to match factory
specifications.
