Practice question

Why should air reservoirs be drained regularly?

  1. To increase brake lag before a trip
  2. To remove water, oil, and sludge that can damage valves or freeze
  3. To disable the low-air warning
  4. To raise tire pressure

Answer: B — To remove water, oil, and sludge that can damage valves or freeze

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Practice more: Alberta Air Brake (Q) Knowledge Test Practice Questions - Alberta Air Brake (Q Endorsement) Knowledge Test Exam →