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CDL College Coupling and Uncoupling Tractor Trailer Inforgraphic

This inforgraphic from CDL College (a truck driving school) demonstrates the Alley Dock maneuver. You may be tested on this maneuver during the backing portion of the CDL Skiils test. We have demonstrated the different angles and provided notations to help a truck driver perfect the alley dock during the CDL driving test. Visit http://cdlcollege.com or call 303-367-1030 for more information about truck driving school or a CDL Skills Test.

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CDL College Coupling and Uncoupling Tractor Trailer Inforgraphic

  1. 1. CONNECTIONS: Air/Electrical Lines & Fifth Wheel INSPECTION TIPS: • Begin Your Inspection at the Rear of the Truck and Move Toward the Front of the Trailer • Inspect Items in order, from Top to Bottom (or High to Low) • METAL and Hard Plastic Items: (BBC) Bent, Broken, Cracked • RUBBER Items: (ABC) Abrasions, Bruises, Cuts • Touch, or Point to, Everything You are Inspecting REAR of TRUCK FRONT of TRAILER AIR/ELECTRICAL LINES: Ensure Air Lines are Securely Mounted at BOTH Ends, All Hardware is Present, Nothing is Bent, Broken, or Cracked. Lines have no ABC’s.No Audible Leaks. Gladhand Seals no ABC’s. FIFTH WHEEL: APRON is Securely Mounted, not BBC. No Gap between Apron and Skid Plate. SKID PLATE is Properly Greased, Securely Mounted, not BBC. PIVOT PIN is Securely Mounted, not BBC, Cotter Pin is in place. PLATFORM is Securely Mounted to Frame, not BBC, All Hardware is Present, not BBC. RELEASE HANDLE is Securely Mounted, not BBC, in Locked position. KINGPIN & LOCKING JAWS are Securely Mounted, not BBC. Locking Jaws around Kingpin. (SLIDING FIFTH WHEEL: All Hardware is Present; Air Line is Securely Mounted, no Audible Leaks, no ABC’s) Ensure Electrical Line is Securely Mounted at BOTH Ends, All Hardware is Present, Nothing is Bent, Broken, or Cracked. Lines have no ABC’s. Safety Latches are in place, not BBC. Lines are not Tangled or Dragging on Catwalk.

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