Air Brakes

Question 1

Controlled braking:

Answer 1

can be used to keep your vehicle in a straight line and allow you to turn if necessary.

Question 2

The __________ keeps air from going out if the air compressor develops a leak.

Answer 2

one-way check valve

Question 3

Slack adjusters:

Answer 3

regulate the distance that the air brake has to travel to apply friction to the wheel.

Question 4

When the air pressure is built up to governor cutoff, the air leakage rate for combination vehicles with the engine off and the foot brake fully applied should be less than_____ in one minute.

Answer 4

4 psi

Question 5

The safety valve is usually set to open at:

Answer 5

150 psi.

Question 6

By pushing the trailer air supply control knob in, you:

Answer 6

supply the trailer with air.

Question 7

The air compressor governor controls:

Answer 7

when the air compressor will pump air into the air storage tanks.

Question 8

To control your speed on a downgrade, you should:

Answer 8

To control your speed on a downgrade, you should: