CDL Air Brakes Endorsement Final Exam Study Questions & Answers.
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Course
Cdl
Institution
Cdl
CDL Air Brakes Endorsement Final Exam Study Questions & Answers.
To check the slack adjusters on S cam brakes, you should: - CORRECT ANSWER Wear gloves and pull hard on each slack adjuster.
To test the low pressure warning signal, you should (3): - CORRECT ANSWER * Shut the engine off
* Tu...
CDL Air Brakes Endorsement Final
Exam Study Questions & Answers.
To check the slack adjusters on S cam brakes, you should: - CORRECT ANSWER Wear gloves and pull hard
on each slack adjuster.
To test the low pressure warning signal, you should (3): - CORRECT ANSWER * Shut the engine off
* Turn the electrical power on
* Step on and off the brake pedal to reduce air pressure.
With dual air systems, the air pressure should build: - CORRECT ANSWER From 85 to 100 psi in 45
seconds.
With single air systems, the air pressure should build: - CORRECT ANSWER From 50 to 90 psi in 3
minutes.
To test air leakage rate you should: - CORRECT ANSWER Turn off the engine and release the service
brake.
To check the air compressor governor "cut in" and "cut out" pressures (3): - CORRECT ANSWER * Run
the engine at a fast idle
* Pump the brake to reduce tank pressure
* Monitor the air pressure gauge
The governor allows the air to start pumping again when it reaches the cut in level or around: - CORRECT
ANSWER 100 psi
The governor stops pumping air when it reaches the "cut out" level, or around: - CORRECT ANSWER 125
psi
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