Air Brake Check

Question 1

Governor Cutout

Answer 1

My air governor cut out between 120 - 140 psi. It cut out, my air gauge is working.

Question 2

2. Air Leaks (no more than 3 psi)

Answer 2

I should lose no more than 3 psi in one minute. I have no leaks.

Question 3

3. Low Air Warning (before 55 psi)

Answer 3

My low air warning light and buzzer should activate before the pressure drops below 55 psi.

Question 4

4. Parking Brake Valve (20 - 45 psi)

Answer 4

The parking brake valve should pop out between 20 and 45 psi. It popped out.

Question 5

Brake Checks
Parking Brake

Answer 5

(Cover service break, put bus in D and tap accelerator).
The parking brake is working properly.

Question 6

Service Brake

Answer 6

(Release parking brake and roll forward) The service brake is working properly. It didn’t pull to either side.