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OM3012.3
Instrument Panel and Controls
INSTRUMENT PANEL (FIGURE 3-5)
The operator must understand the function and opera-
tion of each instrument and control. This knowledge is
essential for proper and safe operation of the machine.
Items that are marked (OPTIONAL) may not apply to
this truck.
(1) Keyswitch
The key switch is a three
position ("Off", "Run",
"Start") switch.
When it is moved to the
"Run" position, the
switch activates the ac-
cessory circuits.
When moved to the
"Start" position, the en-
gine starting system is
activated. After the engine starts, allow the switch to
return to the spring-loaded "Run" position.
(2) Engine Starting Aid
The ether starting aid is used for
cold weather starting and is control-
led by a switch, spring-loaded to the
"Off" position. When the switch is
held in the "On" position, the ether
is injected into the engine intake
manifold to aid in cold weather start-
ing. In cold weather, below 50
keyswitch (7) to the "Start" position. Push the cold
weather starting switch to the "On" position for three
seconds while cranking, then release.
If the engine does not start, wait thirty seconds before
repeating the procedure.
(3) Windshield Wiper
The windshield wiper control switch
is a three position rocker switch.
Moving the switch from "Off" to the
second position places the wiper in
the low or slow cycle. Pushing the
switch to the third position places
the wiper motor in high or fast cycle.
INSTRUMENTS AND CONTROLS
o
o
F (10
C), turn the
(4) Windshield Washer
The windshield washer switch,
when held in the "On" position,
directs water from the reservoir
(located in the cab to the left of the
passenger seatbox) to the wind-
shield for cleaning purposes.
Wipers (3) should be operating
when washer is activated. This switch is spring loaded
to the "Off" position. The windshield washer has a 2 qt.
(2 l) plastic container.
(5) Lights - Instrument Panel
The panel light dimmer control is a
rheostat which allows the operator
to vary the brightness of the instru-
ment panel lights.
(6) Lights- All
The instrument panel lights and the
head lights are controlled by a
three position switch. Moving the
switch from the "Off" position to the
second position completes the cir-
cuit from battery to the instrument
panel lights and taillights. Moving
the switch to the third position completes the circuit to
the head lights in addition to the panel and tail lights.
(7) Fog Lights (Optional)
The fog lights are an optional piece
of equipment, useful in heavy rain
and foggy conditions.
When present, the switch has two
positions, "On" and "Off".
Operation - Section 3
Page 3-15
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