Question 18 of 20
Score: 0/0To perform a proper parking brake test, you should have the trailer air supply pushed in, the trailer hand brake released, and the parking brake:
Explanation“Parking brake out” means the yellow knob is pulled out, which engages the parking brake. This setup allows you to test whether the parking brake holds the vehicle when gently tugging forward.
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Did you know? Say what you're checking and why; the examiner is grading the why.
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