Practice question

If the fifth wheel release handle will not pull during uncoupling, what is the best first correction?

  1. Force the handle with a pry bar while the trailer can roll
  2. Drive away at normal speed
  3. Relieve pressure on the locking jaws only after the trailer is supported and secured
  4. Disconnect the service line and ignore the lock

Answer: C — Relieve pressure on the locking jaws only after the trailer is supported and secured

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