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Coupling Basics

Before pulling away after uncoupling from one trailer and coupling to another, why do you raise the landing gear fully?

  • A.The gear is meant to drag as an extra brake
  • B.Partly lowered gear improves trailer balance
  • C.Gear left partly down can strike the ground, railroad tracks, or dock edges and be torn off
  • D.Raising it fully is only a cosmetic habit
Correct answer

C. Gear left partly down can strike the ground, railroad tracks, or dock edges and be torn off

Why

A crank handle spinning free and legs hanging below the frame are easy to miss from the cab. Fully raised and secured gear, with the handle stowed, clears crossings and uneven yards that would otherwise bend or rip the assembly off.

Manual topic: Combination Vehicles - Coupling Checks · From the General Knowledge practice bank (GK-142).

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