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2024 IL CDL Practice Test: All - Test 2

17. How should the air leakage rate be tested?
A
Leaving the engine on, pumping the brake pedal and checking the air pressure drop.
B
Turning off the engine, releasing the parking brake and timing the air pressure drop
C
Pumping the brake pedal when the air pressure has dropped below 60 psi.
D
Turning off the engine, holding the parking brake and timing the air pressure drop.
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