A driver is performing a coupling inspection and finds that the converter dolly's fifth wheel locking jaws have closed around the kingpin but a gap exists between the fifth wheel plate and the trailer apron plate. What does this indicate?
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ANormal condition — a small gap is required for fifth wheel articulation during turns
BThe fifth wheel needs lubrication but is otherwise safe to operate
CThe kingpin may not be fully seated; the trailer may be resting on the fifth wheel lip rather than the plate surface
DThe landing gear should be lowered slightly to fill the gap before moving
✓ Correct answer: C. The kingpin may not be fully seated; the trailer may be resting on the fifth wheel lip rather than the plate surfaceThe CDL manual states there should be no gap between the upper fifth wheel plate and the trailer apron plate after coupling; a visible gap means the kingpin has not dropped fully into the jaws and the coupling is incomplete.
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