Question 12 of 140

Which of these should you do to help keep the air brake system free of contamination?

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Drain the air tanks daily, or check the automatic drain valves, to remove moisture and oil
Add extra engine oil to the compressor
Avoid draining the tanks to save the air pressure already built up from the morning startup
Check the tanks only once a month

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Correct answer to question 12 (Air Brakes): Drain the air tanks daily, or check the automatic drain valves, to remove moisture and oil

Why

Moisture and oil collect in the air tanks over time; draining them daily, or relying on working automatic drains, removes contamination before it can damage valves or freeze in cold weather.

Updated: November 2026

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Which of these should you do to help keep the air brake system free of contamination?

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