Question 5 of 20
Score: 0/0When testing the trailer spring (parking) brakes only, how should the air valves be positioned?
ExplanationTo check the trailer’s spring brakes, both service and parking brakes should be off, the trailer air supply must be pulled out, and the trolley valve should remain released.
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Did you know? Always do a tug test after coupling — the exam expects you to confirm the connection.
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