Practice question

Why must condensed water and oil be drained daily from manual air brake storage tanks in commercial vehicles?

  1. To reduce the vehicle gross vehicle weight by 500 kilograms
  2. Water and oil sludge can cause valve corrosion, freeze in cold lines, damage rubber seals, and reduce air storage capacity
  3. To reuse the drained fluid as windshield washer solvent
  4. Air tanks do not need to be drained if the vehicle is parked indoors

Answer: B — Water and oil sludge can cause valve corrosion, freeze in cold lines, damage rubber seals, and reduce air storage capacity

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