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TEXAS CDL AIR BRAKES WITH
COMPLETE SOLUTION
Question : You should know that your brakes are fading
when?
Correct answer: You have to push harder on the brake
pedal to control you down hill speed
Question : If the spring brakes are on when should you
push the brake pedal?
Correct answer: Never
Question : Repeatedly pressing and releasing (fanning)
the brake pedal may result in ?
Correct answer: A loss of air pressure
Question : The driver must be able to see a low air
pressure warning which comes on before pressure in the service air tank falls below_____PSI?
Correct answer: 60psi
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Question : If your truck or bus has dual parking control
valves you can use pressure from a separate tank.
Correct answer: to release the emergency/spring/parking
brakes to move a short distance.
Question : The brake pedal in a air brake system.
Correct answer: controls the air pressure applied to put on
the brakes
Question : To check the free play of manual slack
adjusters of s-cam brakes you should?
Correct answer: park on level ground, chock the wheels
release the parking brakes and pull on the slack adjusters
Question : Parking or emergency brakes on trucks or
buses can be legally held on by _______ pressure.
Correct answer: Spring
Question : Emergency stab braking is when you
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Correct answer: brake and hard as you can, then release
the brakes when the wheels lock up and put on the brakes again when the wheels start rolling
Question : The most common type of foundation brake
found on heavy vehicles is the
Correct answer: S-Cam
Question : If your truck has dual air brake system and one
of the systems is low on pressure
Correct answer: either the front or rear brakes will not be
fully functional
Question : The most important thing to do when a low
pressure warning light comes on is to
Correct answer: stop and safely park as soon as possible
Question : With air brake equipped vehicles, the parking
brakes should be used
Correct answer: any time the vehicle is parked
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Question : The air compressor Governor controls
Correct answer: when air is pumped into the tanks
Question : The stop light switch
Correct answer: turns on the brake light to warn other
drivers behind you
Question : For air brake systems in good condition the air
compress compressor should start pumping at about _______ psi
Correct answer: 100psi
Question : The air loss rate for a straight truck or bus with
the engine off and the parking brakes off and the service brakes on should not be more than