Question 7 of 20
Score: 0/0After supplying air to the trailer, how do you make sure the airlines are not crossed and the trailer brakes are working?
ExplanationTo confirm the airlines are connected correctly and the trailer brakes work, apply and release the trailer brakes while listening for the sound of the brakes engaging and releasing.
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Did you know? Know which line is supply and which is service, and what happens when the emergency line loses air.
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