Iowa CDL Combination Test 1

To uncouple a loaded trailer, after the landing gear has made firm contact with the ground, you should

turn the crank a few more times until the trailer is lifted off the fifth wheel. turn the crank a few more times to lift some weight off the tractor. secure the crank handle safely.

Correct Answer:

turn the crank a few more times to lift some weight off the tractor.

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