Air Brakes Eng 4

What results from excessive heat, causes chemical changes in the brake lining with reduced friction and also causes expansion of the brakes drums?

The total braking distance for the air brakes is greater than that of the hydraulic brakes due to the distance ____?

You are driving a vehicle at 55 mph on the dry pavement under good traction and brake conditions. What is the approximate total stopping distance needed to bring your vehicle to a complete stop?

All the vehicles equipped with air brakes have?

Which of the following pumps air into the air storage tanks?

The air compressor should stop pumping at?

To check the slack adjusters on S-cam brakes, you should park on?

When should you NOT use the parking brakes?

When the parking brake is engaged, what does it do to the spring brakes?

What protects the tank and the rest of the air system from too much pressure?

Which of the following statements is true?

Before driving a vehicle equipped with dual air system, allow time for the air compressor to build up the minimum pressure of ________.

What should you do if the low air pressure warning is activated?

Why is it that during long descents, experts recommend using a low gear and a light and constant pressure instead of braking again?

What device protects the tank and the rest of the air brake system from having too much pressure?

Why, on long downhill grades, do experts recommend using a low gear and light steady pressure instead of on-again, off-again braking?

When is the safety valve usually set to open?

Before driving a vehicle with a dual air system, allow time for the air compressor to build up to 100 psi pressure in which of the following?

What controls the parking brakes in newer vehicles?

When you go on a steep downgrade, and you have to apply your foot hard on the pedal brake to mantain the same speed, this means that your brake is fading,you should?