Question 6 of 20
Score: 0/0Before supplying air to the air tanks of a second trailer, what must you do?
ExplanationTo ensure proper air flow to the second trailer’s tanks, you must open the shut-off valves at the first trailer’s rear and close the valves at the second trailer’s rear to control air supply correctly.
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Did you know? Hook the converter dolly in order and secure it — the test checks every step.
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