coupling

Operating the trailer

Preparations before coupling

Follow the instructions on inspecting the trailer and tractor below before coupling.

Inspecting the tractor’s fifth wheel and trailer’s kingpin

Exit the tractor and inspect the fifth wheel and kingpin. • Check for corroded, damaged, or missing parts (plate, release lever, jaw, and fasteners) on the fifth wheel. • Check if mounting to the tractor is secure. • Check if the fifth wheel plate is in the correct position for coupling. - The fifth wheel is tilted down at the rear. - The jaws are open. - The release lever is in the automatic lock position. • Lock the fifth wheel in place if your fifth wheel is the sliding type. • Check if there is enough lubricant on the plate. • Check the kingpin for damage.

Inspecting the area around the trailer and tractor

Inspect the area for proper coupling and exterior of the trailer. • Check if the area is level and firm enough to support the landing gear. • Check if the trailer parking brakes are applied. • Check if the cargo is properly secured.