Practice question

What must be checked regarding air and electrical lines connected between tractor and trailer?

  1. Lines should drag on the tractor catwalk to clean dust
  2. Lines must be supported securely with spring hangers, have sufficient slack for sharp turns, and show no chafing, crimping, or air leaks
  3. Lines must be tied tightly around the fifth wheel pivot pin
  4. Lines should be taped together with transparent household tape

Answer: B — Lines must be supported securely with spring hangers, have sufficient slack for sharp turns, and show no chafing, crimping, or air leaks

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