Volvo VNL Operator's Manual page 339

334 Fifth Wheel Instructions
Slowly drive the tractor forward or back-
ward to position the fifth wheel.
After sliding the fifth wheel to the desired
position, engage the slide locking plungers
by moving the cab switch to the "LOCK"
position (press in the top part of the switch).
WARNING
Do not operate the vehicle if the
plungers are not fully engaged and the
trailer landing gear is not fully retracted.
Doing so may cause damage to the trac-
tor, trailer and landing gear, loss of
trailer and personal injury.
Visually check to see that the slide
plungers are fully engaged. It may be nec-
essary to leave the trailer brakes locked and
to move the tractor slightly to engage the
slide plungers into the rail.
Wind up the trailer landing gear to its fully
retracted position.
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