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Commercial Drivers (CDL)

Before unhooking a semi-trailer, ensure that the ground will support the weight of the landing gear.

Unhooking Semi-Trailer

Author: Rick
MUST KNOW LAP 1) Landing Gear down 2) Air Lines & Electrical (Disconnect) 3) Pin (Pulled & Unlocked)
Always, always check the jaws are closed around the king pin to ensure that the trailer is in fact hooked to the truck.

Hooking a Semi-Trailer

Author: Rick
Always check with a flashlight that the 5th Wheel jaws are locked around the king pin.

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