Lull 944E-42, Service Manual

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Electrical System
9.182 Model 644E-42/944E-42 Rev. 6/04
a. Power-Up Lights
When the ignition switch is turned to power up the
vehicle, all lights (13 total) in the front dash panel will
illuminate for three seconds as a test function. During this
time, an audible alarm will also sound.
b. Function Indicator Lights
There are four subdued or “hidden” function indicator
lights in the front dash panel that illuminate only when a
specific function is activated. They are:
Parking Brake Indicator
The parking brake indicator (1)
illuminates any time the parking brake
switch is applied and the ignition
switch is in the RUN position.
Stabil-TRAK Mode Indicators
One of these lights will illuminate
when the Stabil-TRAK system has
been ACTIVATED in the “Locked”
Mode (2) or the “Slow Pivot”
Mode (3). For additional
information refer to Section 9.10.12, “Stabil-TRAK™
“Locked” Mode Indicator Troubleshooting,” or Section
9.10.13, “Stabil-TRAK™ “Slow Pivot” Mode Indicator
Troubleshooting.”
Engine Air-Intake Heater Indicator
(644E-42 Option & 944E-42 Standard)
The engine air-intake heater indicator (4)
illuminates with the ignition switch in the RUN
position any time the ambient temperature
drops below 40° F (4° C). The engine grid
heater then becomes active and the engine should not be
cranked until the light goes OFF. Once the light goes OFF
it indicates that the grid heater is at the proper
temperature and the engine is ready to start.
Note: This indicator light may come ON when the
engine is running to indicate that the post heat function is
active. This is a normal condition when ambient
temperatures are below 40° F (4° C).
c. Gauges and Indicators
Fuel Level Gauge
Make sure the vehicle is level to ensure an
accurate fuel level reading. The fuel
gauge (5), located on the left side of the front
dash panel, indicates the amount of fuel in the
fuel tank. Refuel before the fuel gauge
reaches the “E” to prevent running out of fuel. Capacity of
the fuel tank is 50.2 gal (190 liters) total capacity with a
usable capacity of 45 gal (171 liters). If the engine ever
runs out of fuel, the fuel system will need to be bled. Refer
to Section 7.8.6, “Bleeding Air From The Fuel System.”
Engine Tachometer
The tachometer (6) is the gauge in the center
of the front dash panel and indicates speed of
the engine in revolutions per minute (rpm).
Hourmeter
The hourmeter (7) records engine operating
hours and has a total readout of 99,999.99
hours. It is located on the front dash panel in the
lower portion of the tachometer.
Engine Coolant Temperature Gauge
The engine coolant temperature gauge (8) is
located on the right side of the front dash panel.
Glance at the gauge on a regular bases during
operation. The gauge monitors the temperature
at which the engine is operating. If the gauge
goes over 210° F (99° C) the engine coolant is too hot.
Idle the engine for one (1) minute prior to shutting the
vehicle down. If the radiator is boiling over, SHUT THE
VEHICLE DOWN AS SOON AS PRACTICAL.
0000000
RPM X 100
5
10
15
30
20
25
F
1/2
E
104
176
80
248
120
°C
°F
D
r/min
MU0010
1
2
3
4
5
6
7
8
OH2260
OS1970 OU0050
OU0040
OH24701
OU0020
r/min
OU0030
OT0980