When coupling, the fifth wheel jaws should close around the:

Shank.. Section 6.4: The locking jaws must close around the *shank* of the kingpin (the narrow part), not the head.

When coupling, the fifth wheel jaws should close around the:

ANSWER BREAKDOWN
  • A. Incorrect. "Kingpin." is not correct. The locking jaws must close around the *shank* of the kingpin (the narrow part), not the head.
  • B. Correct. The locking jaws must close around the *shank* of the kingpin (the narrow part), not the head.
  • C. Incorrect. "Head of the kingpin." is not correct. The locking jaws must close around the *shank* of the kingpin (the narrow part), not the head.
  • D. Incorrect. "Base of the kingpin." is not correct. The locking jaws must close around the *shank* of the kingpin (the narrow part), not the head.