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Fifth Wheel Slide Control Switch
4700 dm 04.08.003
Note: Do not activate the fifth wheel slide control
valve while the vehicle is in motion. To do so could cause damage
to the fifth wheel member, the kingpin, the cab or trailer, and ultimately
to the drivetrain.
The fifth wheel air slide switch permits repositioning of the sliding
fifth wheel from inside the cab. See Fig.. Moving the air slide control valve switch to the lock position
deactivates the control valve and locks the fifth wheel to the baseplate.
Moving the switch to the unlock position activates the control valve
and unlocks the fifth wheel slide mechanism, allowing changes to the
total length of the tractor-trailer and changes to axle loads to comply
with varying jurisdictional laws. For detailed operating instructions
for fifth wheel slide, coupling, and uncoupling procedures, see Fifth Wheels, General Information.
