Which of these is the correct order for uncoupling a rear trailer?

Apply parking brakes, chock wheels, lower landing gear, disconnect lines, release jaws.. Section 7.2: Always secure the trailer

Which of these is the correct order for uncoupling a rear trailer?

ANSWER BREAKDOWN
  • A. Incorrect. "Disconnect safety chains, disconnect air/electric, unlock pintle hook." is not correct. Always secure the trailer (chocks/landing gear) before disconnecting.
  • B. Incorrect. "Unlock pintle hook, drive away." is not correct. Always secure the trailer (chocks/landing gear) before disconnecting.
  • C. Incorrect. "Disconnect air, unlock hitch, pull forward." is not correct. Always secure the trailer (chocks/landing gear) before disconnecting.
  • D. Correct. Always secure the trailer (chocks/landing gear) before disconnecting.