CONTROLS/INSTRUMENTS
2 - 11
Dashboard Indicator/Warning Lights
and Instruments
1. Door ajar (optional)
This indicator is provided on vehicles equipped
with a central door, and will light only when this
door is ajar.
2. Water separator (optional)
Lights when the accumulated water in the diesel
fuel filter/water separator should be drained (see
page 6-5).
3. Tag axle
Lights when tag axle wheels are raised. Fur-
thermore, a beep will sound to advise the driver
that the wheels are raised.
4. Level low (optional)
Flashes when vehicle manual leveling system is
operating (see page 2-9).
5. Parking brake
Lights when parking brake is applied (see page
2-19).
6. L.H. turn signal - Hazard
Flashes when L.H. turn signal is selected with
multifunction lever or when hazard switch is
turned on. (When hazard switch is turned on
both L.H. and R.H. turn signals will flash.)
7. Low secondary air pressure
Lights when air pressure in secondary system is
too low. For System information, see "BRAKES"
on page 3-1.
8. Low primary air pressure
Lights when air pressure in primary system is
too low. For System information, see "BRAKES"
on page 3-1.
9. R.H. turn signal - Hazard
Flashes when R.H. turn signal is selected with
multifunction lever or when hazard switch is
turned on. (When hazard switch is turned on
both L.H. and R.H. turn signals will flash.)
10. High beams
Lights when headlight high beams are selected
(see page 2-18).
11. Battery
Lights when alternator is not functioning prop-
erly.
12. Battery balance
Lights when batteries are out of balance.
Note: Before seeking assistance, check that
the 12 volt main battery disconnect switch is set
to the "ON" position, that the demand for the 12
volt power is not exceeding rated amperage out-
put of battery equalizer(s) and finally, check cir-
cuit breaker on battery equalizer(s) (for location,
refer to page 2-28). Allow at least 15 minutes to
balance batteries after corrective measures
have been taken.
13. High or low battery voltage
Lights when battery voltage exceeds 30.3 volts
or drops below 23.7 volts.
14. Secondary air pressure gauge (Brakes)
Indicates air pressure in the secondary system.
Normal reading varies from 95 to 125 psi (655 to
860 kPa).
15. Primary air pressure gauge (Brakes)
Indicates air pressure in the primary system.
Normal reading varies from 95 to 125 psi (655 to
860 kPa).
16. Engine coolant temperature gauge
Indicates engine coolant temperature. Normal
reading should vary from 190 to 215°F (88 to
102° C).
In extremely hot weather and high altitude, the
coolant temperature can reach 215°F (102°C)
and more when climbing a long grade at full
throttle. If this situation occurs, the "check en-
gine" light will come on (at 217°F - 103°C) and
the engine overtemperature protection system
(EOP) will be activated. If the cooling system is
properly maintained, the temperature should
stabilize below the shut back temperature of
222°F (106°C) so the vehicle can operate nor-
mally. See also item # 29 on page 2-12.
Note: Engine is not considered "overheating"
when below 215
°
F (102
°
C).
17. Fuel gauge
Indicates the amount of fuel remaining in the fuel
tank. If your vehicle has an optional auxiliary
tank, the gauge will show the total fuel level, as
the tanks are interconnected.
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