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What does an alcohol evaporator do on vehicles equipped with one?
- A.It burns alcohol to heat the cab
- B.It cleans the brake drums while driving
- C.It replaces the need for an air dryer forever
- D.It introduces alcohol vapor into the air system to lower the freezing point of collected moisture
Correct answer
D. It introduces alcohol vapor into the air system to lower the freezing point of collected moisture
Why
The evaporator is a cold-weather aid that helps keep condensed water from freezing in valves and lines. It does not remove the water, so tanks still must be drained on schedule.
Manual topic: Air Brakes - Air Compressor and Governor · From the Air Brakes practice bank (AB-039).