When using a light beam alignment system to check axle tracking on a highway semi-trailer,how should the kingpin flag assembly be mounted to the trailer?
A) on the kingpin perpendicular to the vehicle centerline
B) on the kingpin aligned longitudinally to the vehicle centerline
C) on axle extensions
D) clamped to the foremost part of the upper coupler plate

Question

Quizplus · Accepted Answer

The kingpin flag assembly should be mounted on the kingpin perpendicular to the vehicle centerline to ensure accurate alignment measurements.

When Using a Light Beam Alignment System to Check Axle