What must you inspect before moving the tractor to couple with the trailer?

Before moving the tractor to couple with the trailer, it is essential to inspect the fifth wheel, trailer couplers, and connectors. The fifth wheel is a critical component that ensures proper attachment between the tractor and trailer; checking it ensures that it is properly lubricated and in good working condition. This prevents any issues during the coupling process that could lead to accidents or equipment damage.

Inspecting the trailer couplers is equally important. These couplers must be functional and secure to provide a reliable connection between the tractor and the trailer. If the couplers are not in proper working order, it can result in an unsafe coupling situation.

Connectors, including electrical and air lines, must also be inspected to ensure they are intact and functioning correctly. These connectors deliver vital signals and air pressure to the trailer's braking system and lighting. Any issues with the connectors can lead to malfunctions that endanger the safety of the vehicle and its operation.

Thus, a thorough inspection involving all these components is necessary to ensure the safety and effectiveness of the coupling process.