Air Brakes Flashcards
What is the air pressure range for normal air brake operation?
100-125 PSI
At what PSI does the low air pressure warning activate?
Around 60 PSI
What happens if the air brake system pressure drops below 20-45 PSI?
The spring brakes will engage automatically.
What is the purpose of the emergency air brake system?
To stop the vehicle if the service brake system fails.
How should you check for leaks in air brake systems?
Perform a leak-down test by holding the brake pedal and monitoring pressure loss.
What are the steps of the air brake test?
Applied pressure test, leakage test, warning light/buzzer check, spring brake test.
What should you do before driving a vehicle with air brakes?
Allow the air pressure to build up to at least 100 PSI.
Why should you drain air tanks daily?
To remove moisture and prevent brake system damage.
