Examlex
Why do nuclear reactions in a star occur only near its center
Serviced
The act of performing maintenance or repair work on a vehicle or machinery to ensure it operates correctly.
Trailer Component
A part or element used in the construction or assembly of a trailer, such as axles, brakes, or lighting systems.
Tractor Chassis
The main structural frame of a tractor, to which all other components and systems are attached or supported.
Kingpin
(1) The linkage pin used in a steering knuckle that permits the assembly to pivot, or the tempered steel, coupling pin mounted on a trailer upper coupler that engages with fifth wheel jaws; (2) The lugged pin built into a trailer upper coupler assembly that engages to jaws in a fifth wheel assembly, permitting articulation at the fifth wheel. Forged from middle alloy steels and tempered. In North America, a kingpin is usually welded into the upper coupler; elsewhere, it is more often bolted.
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