Air Brake Manual (CH 2)

Question 1

The first tank that compressed air enters is called?

Answer 1

Supply Tank “Wet Tank”

Question 2

Name problems that can occur in the primary and secondary tanks

Answer 2

1. Moisture and oil can form sludge damaging seals and causing brakes valves to stick
2. Oil and moisture can become corrosive
3. Too much build up can cause reduced volume of air and causing potential brake failure

Question 3

How often should oil and moisture be drained out of the tanks

Answer 3

Regularly. (Some manufacturers recommend daily)

Question 4

Which tank should be drained first?

Answer 4

The supply tank

Question 5

What is meant by dual service tanks

Answer 5

When air leaves the supply tank it splits into two circuits. A primary and secondary called dual service tanks. “Dry Tanks.

This is a safety features incase one tank or circuit fails.

Question 6

Can compressed air be hazardous?

Answer 6

Yes. When it is being exhausted from the vehicle. Compressed air leaves the vehicle at a very high speed. It carries moisture, oil, dirt and dust.

Question 7

Where does compressed air leave the vehicle?

Answer 7

1) Exhaust ports of brake valves
2) on or near the vehicles axes
3) air-dryer port
4) air-tank drain valves

Never tamper with brake system components

Question 8

What are air dryers used for?

Answer 8

To reduce the amount of moisture that passes into the air brake system.