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What should you check about the gladhand seals when coupling?
- A.Seals are decorative; metal-to-metal contact seals the connection
- B.Old seals should be removed to improve airflow
- C.That the rubber seals are present, not cracked, worn, or missing, so the connection will not leak air
- D.Seals only matter in winter
Correct answer
C. That the rubber seals are present, not cracked, worn, or missing, so the connection will not leak air
Why
The rubber seal is what makes two metal gladhands airtight under pressure and vibration. A damaged seal leaks exactly the air your brakes depend on, and seals are cheap to replace during coupling.
Manual topic: Combination Vehicles - Air Lines and Gladhands · From the Combination Vehicles practice bank (CV-239).