Test 3 Brakes

Question 0

2) the application pressure gauge shows how much air pressure you:

Answer 0

Are applying to the brakes

Question 1

1) If your vehicle has an alcohol evaporator, it is there to:

Answer 1

Reduce the risk of ice in air brake valves in cold weather

Question 2

3) the most important thing to do when a low air pressure warning comes on is:

Answer 2

Stop and safely park as soon as possible

Question 3

4) your vehicle has a dual air brake system. If a low air pressure warning comes on for the secondary system, you should:

Answer 3

Bring the vehicle to a safe stop and continue only when the system is fixed

Question 4

5) if your truck has a properly functioning dual air brake system and minimum size air tanks, the air pressure should build from 85 to 100 psi within_seconds.

Answer 4

45

Question 5

6) how should you check that your service brakes are working properly?

Answer 5

Park on level ground, wait for normal air pressure, release the parking brake, move the truck forward slowly (about 5 mph) and apply the brakes firmly using the brake pedal.

Question 6

7) if you must make an emergency stop, brake so you:

Answer 6

Can steer and your vehicle stays in a straight line

Question 7

8) when the brakes are applied the brake shoes (or linings) are pressed against the:

Answer 7

Brake drum or disc

Question 8

9) under ideal conditions, a truck with air brakes going 55 mph would require a topping distance of :

Answer 8

More than 300 feet

Question 9

10) the use of air brakes on a long and/or steep downgrade under normal conditions is only a supplement to:

Answer 9

The braking effect of the engine

Question 10

11) the air brake lag distance at 55 mph on dry pavement adds about_feet to your stopping distance.

Answer 10

32

Question 11

12) repeatedly pressing and releasing (fanning) the brake pedal may result in:

Answer 11

A loss of brake air pressure

Question 12

13) the air compressor should stop pumping at about_psi.

Answer 12

125

Question 13

14) all air brake equipped vehicles have:

Answer 13

An air supply pressure gauge

Question 14

15) emergency controlled braking is when you:

Answer 14

Apply the brakes as hard as you can without locking the wheels

Question 15

16) the braking power of the spring brakes:

Answer 15

Depends on the service brakes being in adjustment

Question 16

17) during normal driving, spring brakes are usually held back by:

Answer 16

Air pressure

Question 17

18) the safety valves is usually set to automatically reduce pressure at_psi.

Answer 17

150

Question 18

19) if your truck’s air compressor has it’s own oil supply, when should you first check the oil level?

Answer 18

Before driving

Question 19

20) emergency stab braking is when you:

Answer 19

Brake as hard as you can, release the brakes when the wheel lock, and put on the brakes again when the wheels start rolling