DASH-MOUNTED FEATURES PART 4: CONTROLS AND DISPLAYS
– 32 – Y53-6007 (R10/06)
UNLOCK the differential. The guard over this switch pre-
vents you from accidentally activating the lock. See “Inter-
axle Differential” on page 81 for more information on using
your interaxle differential.
WARNING! Placing the differential lock in the
“LOCK” position while your wheels are spin-
ning could cause loss of control or axle dam-
age. You could be hurt. Switch to “LOCK” only
when your wheels are not spinning.
Fifth Wheel Lock (Slider Adjustment) Switch
CAB CONTROL
0
1
03031
Vehicles having an air slide fifth wheel have a fifth wheel
slider lock controlled by a switch on the instrument panel.
By placing the switch in the unlock position, you can slide
the fifth wheel to various positions to adjust weight distri
-
bution. There is a guard over this switch to protect you
against accidentally activating or releasing the lock.
WARNING! Do not move the fifth wheel while
the tractor-trailer is in motion. Movement of
the fifth wheel while a tractor-trailer is moving
can cause a serious accident. Your load could
shift suddenly, causing you to lose control of
the vehicle. Never operate the vehicle with the
switch in the unlock position. Always inspect
the fifth wheel after you lock the switch to be
sure the fifth wheel is engaged.
CAUTION: Both the fifth wheel plate and the
slide tracks (if a slider) should be cleaned and
lubricated periodically to ensure smooth turn
-
ing and sliding action. Failure to keep these
surfaces lubricated can lead to frame or drive
-
line damage.
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