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Coupling and Uncoupling Tractor Trailers – SS17030AE (5 mins)
to take the exam.
A visual inspection is not necessary if you are sure the coupling is good.
Chocks should be removed before coupling or uncoupling.
After you uncouple your tractor and trailer, you should chock the wheels.
You need to ensure the trailer is at the correct height before attempting to couple.
After coupling, you should test the connection before driving on the road.
Trailer brakes should be off during coupling.
Air lines and electrical lines must be disconnected before you uncouple your trailer.