Air Brakes Flashcards
3 different braking systems:
Parking
Service
Emergency
The governor controls ____ air is pumped into storage tanks
WHEN
Storage tanks hold enough air to operate brakes several times before compressor quits working . TRUE or FALSE
True
If a leak should occur in the COMPRESSOR there is a ONE-WAY check valve that prevents leaking from the storage tanks
TRUE or FALSE
True
Debris like oil & water are trapped in a Automatic Water Ejector in the 1st tank then pumped into a ____ _____.
Wet tank
Water in the air system can freeze and cause this to happen____ ____.
Brake failure
Alcohol evaporator reduces the risk of ____ building In the air brake system.
Ice
Safety valve is set to open at this psi.
120-125
Brake pedal controls air pressure to the _____brake
Service
Air supply pressure gauge shows how much is available in the_____?____.
Air tank
When using parking or emergency brakes this type of pressure is used.
Spring pressure
Air brake equipped vehicles must have this braking system just in case air system fails.
Hydraulic braking
Application pressure gauge shows driver how much air is being …
Applied the the brakes.
Warning device shows when air pressure is low in the services air brake when the psi falls below_____
60
What can legally hold a parking or emergency brake in position.
Spring brakes