CDL Air Brakes TestInspecting Air Brake SystemsEasy

A driver is inspecting the air lines on a commercial vehicle. Which of the following conditions is considered acceptable?

  1. AAir lines securely mounted and free from kinks.
  2. BHoses showing minor chafing or cuts.
  3. CAir lines with visible bulges or swelling.
  4. DAir lines rubbing against the frame or other components.
Show answer & explanation

Correct answer: A. Air lines securely mounted and free from kinks.

Air lines must be securely mounted to prevent chafing, kinking, or damage, and should be free from any conditions that could compromise their integrity.

Why the other options are wrong

  • B. Minor chafing or cuts can worsen and cause leaks.
  • C. Bulges or swelling indicate internal damage and risk of rupture.
  • D. Rubbing can lead to chafing and eventual leaks.

Air Line Integrity

Air lines must be free from damage, securely mounted, and properly routed to ensure the safe and efficient operation of the air brake system.

  • No chafing, cuts, or kinks.
  • Securely mounted to prevent rubbing.
  • No bulges or signs of deterioration.

Memory trick: Lines are fine, no kinks, no grind!

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