Q
94. How should you check that the spring brakes come on when the air pressure in the system drops below a certain level?
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APark on a slight incline, drain off air pressure, set parking brakes and check for movement.
BPark on level ground, chock the wheels, release the parking brake when you have enough air pressure, shut the engine off, and repeatedly press and release the brake pedal.
CPark on level ground, wait for normal air pressure, release the parking brake, move the truck forward slowly, and apply the brakes firmly using the brake pedal.
Detailed Explanation
The correct answer is "Park on level ground, chock the wheels, release the parking brake when you have enough air pressure, shut the engine off, and repeatedly press and release the brake pedal.". This is based on federal CDL regulations and safety standards.
Correct Answer: Park on level ground, chock the wheels, release the parking brake when you have enough air pressure, shut the engine off, and repeatedly press and release the brake pedal.
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