Suspension Seat Adjustment Controls
All adjustment controls for a suspension seat are lo-
cated on the seat base. Refer to Chapter 2 for com-
plete instructions.
Vernier Throttle Control, Optional
The vernier throttle control can be used to adjust engine
speed when the vehicle is parked. A "quick adjust" set-
ting of engine speed is made by depressing the button
on the control knob, then pushing in or pulling out the
knob. Engine speed adjustments can then be made in
smaller increments by turning the control knob in either
direction.
Warning and Indicator Lights
Warning and indicator light modules, located on each
side of the speedometer, house all of the standard and
optional warning and indicator lights. Figure 3.14 identi-
fies the warning and indicator lights. All of the standard
and optional warning and indicator lights are located in
light banks on each side of the speedometer.
Standard indicator lights include:
• The green right- and left-turn signal lights, which
flash on and off whenever the outside turn signal
lights are flashing.
• The blue high-beam indicator light (located above
the speedometer and tachometer) which comes
on when the headlights are on high beam.
• The red parking brake indicator light which comes
on whenever the parking brakes are activated
and the ignition is on.
Standard Warning System
Standard Warning Lights
Standard red warning lights are for alternator no-
charge, and the brake system. See Fig. 3.14. When-
ever conditions cause the brake system warning light to
come on, a warning buzzer also alerts the driver.
The brake system warning light and buzzer activate
whenever air pressure in the primary or secondary air
reservoir falls below 64 to 76 psi (441 to 524 kPa).
Optional Warning and Indicator Lights
The water temperature warning light and buzzer acti-
vate whenever the engine coolant temperature exceeds
a preset point determined by the engine manufacturer.
Refer to Table 3.1 for this temperature.
The oil pressure warning light and buzzer activate
whenever the oil pressure falls below the minimum oil
pressure recommended by the engine manufacturer.
Refer to Table 3.2.
Driver Controls and Instruments
3.10
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