Examkin

Question

Difficulty: EasyBrake System Components Inspection

While inspecting the brake chambers and connected air lines at each axle, which condition indicates an immediate safety defect?

  1. A
    Manual slack adjuster pushrods that move approximately one-half inch when pulled by hand with brakes released
  2. Air supply hoses that are cracked, worn through outer protective layers to the cord, or audibly leakingAnswer
  3. C
    Brake chambers securely mounted with intact clamp rings and clearly legible identification stampings
  4. D
    Pushrods that show zero movement when checked while the spring parking brakes remain fully applied

Answer

Air supply hoses that are cracked, worn through outer protective layers to the cord, or audibly leaking
Air lines and brake hoses must be checked for cracks, chafing, cuts, and leaks. Hoses worn down to the reinforcing fabric or leaking air cannot safely maintain operating pressure and are out-of-service safety violations.

Step-by-Step Solution

1
Examine the physical condition of air lines, hoses, and brake chamber connections
Identify any visible wear, cracks, chafing against frame rails, or air loss
Commercial vehicle safety regulations prohibit operating with damaged air lines that risk sudden pressure loss
2
Distinguish between critical defects and normal operational conditions
Confirm that deep cracks exposing internal cords or active air leaks are major defects requiring immediate repair
Air brake systems require airtight integrity to maintain sufficient pressure for service brake application

Key Concept

Air brake line integrity and defect identification during component inspection
Rate this question

Topics

Brake System Components Inspection

More questions from this topic