2024 IL CDL Practice Test: All - Test 2
Based on
2024 IL CDL Handbook
17. How should the air leakage rate be tested?
A
Pumping the brake pedal when the air pressure has dropped below 60 psi.
B
Leaving the engine on, pumping the brake pedal and checking the air pressure drop.
C
Turning off the engine, releasing the parking brake and timing the air pressure drop
D
Turning off the engine, holding the parking brake and timing the air pressure drop.