When Using a Light Beam Alignment System to Check Axle

question 8

Multiple Choice

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

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