Practice question

Which of the following describes 'over-the-center' locking of a fifth wheel?

  1. The fifth wheel is tilted backward completely
  2. The locking lever is fully engaged and the safety latch has dropped into place over the release handle
  3. The kingpin is resting on top of the closed jaws
  4. The fifth wheel slide mechanism is in the middle hole

Answer: B — The locking lever is fully engaged and the safety latch has dropped into place over the release handle

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