Fifth Wheel Lock (Slider Adjustment) Switch; Parking Brake Valve And Trailer Air Supply Valve - Peterbilt 348 2017 Operator's Manual

Fifth Wheel Lock (Slider
Adjustment) Switch
WARNING!
Do not move the fifth wheel while
the tractor-trailer is in motion. Move-
ment of the fifth wheel while a trac-
tor-trailer is moving can cause a se-
rious accident. Your load could shift
suddenly, causing you to lose con-
trol of the vehicle. Never operate
the vehicle with the switch in the un-
lock position. Always inspect the
fifth wheel after you lock the switch
to be sure the fifth wheel is engaged.
(03/17)
DASH- AND DOOR-MOUNTED CONTROLS
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
distribution. There is a guard over
this switch to protect you against
accidentally activating or releasing the
lock.
Y53-6060-1C1
Parking Brake Valve and
Trailer Air Supply Valve
Before you leave the cab, apply all
parking brakes.
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