CDL · Air brakes
Your truck's air tanks do not drain automatically. How often should you drain them yourself?
Correct answer: At the end of every workday.
Answer options
- AAt the end of every workday Correct
- BOnce a month
- CAfter every four hours on duty
Why
Compressed air carries water and compressor oil that settle at the bottom of the tanks, and if they are not removed they can freeze in cold weather or otherwise make the brakes fail. When the tanks have manual drain valves, the driver must empty them after every day of driving.
About this question
Topic: Air brakes License: CDL
Part of these practice sets:
Where it applies: Asked in every state.
Practice the whole set
This question is part of Checking and Using Air Brakes (15 questions). Take the full set and check your score.
Practice Checking and Using Air BrakesMore questions from Checking and Using Air Brakes
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- You test a combination vehicle's air system with the engine off and the brakes applied. The pressure loss should be less than:
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