ILLINOIS CDL AIR BRAKES
COMPLETELY SOLVED
The parking break or emergency brake on a heavy vehicle can only be held in position
by something that cannot leak away, like: - ANSWER Spring Pressure
A straight truck or bus air break system should not leak at a rate of more than
_________ PSI per minute with the engine OFF and the brakes RELEASED. -
ANSWER 2
Your vehicle has a dual air brake system. if a low air pressure warning comes on for the
secondary system, you should: - ANSWER Bring the vehicle to a safe stop and
continue only when the system is fixed.
If your vehicle has an alcohol evaporator, it is to: - ANSWER Reduce the risk of ice in
air brake valves in cold weather.
Air braking takes more time than hydraulic braking because air: - ANSWER Takes
more time to flow through the lines than hydraulic fluid.
The brake pedal in and air braking system: - ANSWER Controls the air pressure
applied to put on the brakes.
If your truck or bus has dual parking control valves, you can use pressure from a
separate tank to: - ANSWER Release the spring emergency/parking brake to move a
short distance.
The application pressure gauge shows how much pressure you: - ANSWER Are
applying to the brakes.
If you do not have automatic tank drains, how often should you drain the oil and water
from the bottom of compressed air storage air tanks? - ANSWER At the end of each
day of driving.
You should know that your brakes are fading when: - ANSWER You have to push
harder on the brake pedal to control the speed on a downgrade.
If your vehicle has an alcohol evaporator, everyday during cold weather you should: -
ANSWER Check and fill the alcohol level.
Why drain water from compressed air tanks? - ANSWER Water can freeze and cause
brake failure.
COMPLETELY SOLVED
The parking break or emergency brake on a heavy vehicle can only be held in position
by something that cannot leak away, like: - ANSWER Spring Pressure
A straight truck or bus air break system should not leak at a rate of more than
_________ PSI per minute with the engine OFF and the brakes RELEASED. -
ANSWER 2
Your vehicle has a dual air brake system. if a low air pressure warning comes on for the
secondary system, you should: - ANSWER Bring the vehicle to a safe stop and
continue only when the system is fixed.
If your vehicle has an alcohol evaporator, it is to: - ANSWER Reduce the risk of ice in
air brake valves in cold weather.
Air braking takes more time than hydraulic braking because air: - ANSWER Takes
more time to flow through the lines than hydraulic fluid.
The brake pedal in and air braking system: - ANSWER Controls the air pressure
applied to put on the brakes.
If your truck or bus has dual parking control valves, you can use pressure from a
separate tank to: - ANSWER Release the spring emergency/parking brake to move a
short distance.
The application pressure gauge shows how much pressure you: - ANSWER Are
applying to the brakes.
If you do not have automatic tank drains, how often should you drain the oil and water
from the bottom of compressed air storage air tanks? - ANSWER At the end of each
day of driving.
You should know that your brakes are fading when: - ANSWER You have to push
harder on the brake pedal to control the speed on a downgrade.
If your vehicle has an alcohol evaporator, everyday during cold weather you should: -
ANSWER Check and fill the alcohol level.
Why drain water from compressed air tanks? - ANSWER Water can freeze and cause
brake failure.
