Practice question

Which statement is correct about basic coupling sequence and tug test?

Raise landing gear before backing under
Ignore it if the tractor starts normally
Use the trailer hand valve as the main solution
A safe coupling sequence includes inspecting, aligning, backing under, tug testing with trailer brakes set, visually checking the lock, connecting lines, charging/testing brakes, and raising landing gear.

Answer: D — A safe coupling sequence includes inspecting, aligning, backing under, tug testing with trailer brakes set, visually checking the lock, connecting lines, charging/testing brakes, and raising landing gear.

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