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After hooking up, you should check the fifth wheel connection by:

A. Driving away at 20 MPH and pulling down the trailer hand valve.
B. Backing up with the trailer brakes released.
C. Pulling the tractor ahead gently with the trailer brakes locked.

Answer :

Final answer:

To check the fifth wheel connection after hooking up a trailer, gently pull the tractor ahead with the trailer brakes locked.

Explanation:

To check the fifth wheel connection after hooking up a trailer, you should pull the tractor ahead gently with the trailer brakes locked. This will help ensure that the connection between the tractor and the trailer is secure. By locking the trailer brakes, you can test if the fifth wheel is properly engaged and the trailer will not detach while the tractor moves forward.

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