LOCATION AND DESCRIPTION OF MAJOR COMPONENTS
GOOSENECK ASSEMBLY (1). The gooseneck assembly (1) is the forward most part of semitrailer and provides overall
hookup to a tractor.
INTERVEHICULAR CONNECTIONS (2 and 3). Two electrical connectors (2) and gladhand connectors (3) provide
electrical and air brake connections between the tractor and semitrailer.
GRAB HANDLE (4). A grab handle (4), located at the front streetside of the gooseneck, is used for access to back of
tractor when making intervehicle connections and when working with tractor winch cables.
KINGPIN AND STEERING WEDGE (5 and 6). The kingpin (5) and steering wedge (6), located under the front of the
gooseneck assembly, provide automatic steering for the semitrailer when connected to the tractor. The kingpin is the
center pivoting point for the trailer, and the steering wedge turns with the trailer and operates two master steering
STEERING CONSOLE (7). The steering console (7), located within the gooseneck assembly, consists of a steering arm,
a pivoted steering console, and two master steering hydraulic cylinders. When the steering wedge turns, it operates the
steering arm which rotates the steering console. Two master hydraulic cylinders are operated by the steering console and
displace hydraulic fluid to two slave cylinders on the platform.
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