Air Supply Systems Check

Question 1

1

Answer 1

Chock the wheels

Question 2

2

Answer 2

Air supply systems check: The Air Leakage rate for this vehicle is n more than 3 psi air loss in one minute

Question 3

3

Answer 3

Air leak check: My air pressure is below 90 psi

Question 4

4

Answer 4

I will do a safety start to charge the air until the governor cuts off

Question 5

5

Answer 5

Start the bus engage fast idle

Question 6

6

Answer 6

After the governor cuts off tell the examiner the actual air pressure displayed

Question 7

7

Answer 7

Turn off the engine and return the ignition to the on position

Question 8

8

Answer 8

Release the parking brake

Question 9

9

Answer 9

Fully apply the foot brake and hold for one minute and tell the examiner “I lost no more than 3 psi of air pressure in one minute”

Question 10

10

Answer 10

Low air pressure warning devices check: Tell the examiner “The low air pressure warning devices must activate before it drops below 55 psi”

Question 11

11

Answer 11

Fan the brake until the device activates tell examiner “The low air pressure warning light activated at ____ psi”

Question 12

12

Answer 12

Parking Break valve check: “The parking break valve should close (pop out) at approximately 40 psi”.

Question 13

13

Answer 13

Fan breaks tell the examiner the actual sir pressure