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The correct answer is A Back up gently to ease pressure on the fifth wheel.

When uncoupling a trailer after you have shut off the trailer air supply and locked the trailer brakes, you should: A Back up gently to ease pressure on the fifth wheel.

  • Try to ease the pressure on Locking Jaws.
  • Also, ease the pressure on the fifth wheel locking jaws by backing up gently.
  • This will help you to release the fifth wheel locking lever.

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