TM-9-2320-280-10
TRUCK, UTILITY: M998 SERIES
OPERATOR’S MANUAL
JANUARY 1996
TM-9-2320-280-10 - Page 52 of 405
TM 9-2320-280-10
KEY
ITEM AND FUNCTION
5
Engine oil pressure gauge
indicates the oil pressure when the engine is running.
6
High beam lamp assembly
illuminates when front headlights are switched to high beam position.
7
Coolant temperature gauge
indicates engine coolant temperature.
8
Defroster control knob
directs heated air to the windshield for defrosting.
9
Instrument panel lights
illuminate instrument panel gauges.
10
Heater control knob
varies temperature of heated air into vehicle.
11
Heater fan switch
controls the blower motor speed. The switch has “HI ” (high), "OFF", and 'LO"
(low) settings to regulate defroster and heater air flow into vehicle.
12
Voltmeter
indicates the charging level and activity of the battery charging system.
13
Speedometer/odometer
indicates vehicle speed and accumulated mileage.
14
Fuel gauge
indicates amount of fuel in fuel tank.
15
Hand throttle
increases engine speed for use during cold weather starting, winch operation, deep
water fording, and to obtain maximum alternator output for communications/electrical
requirements, and is not to be used as an automatic speed or cruise control.
16
Accelerator pedal
is the operator's foot control for varying engine speed.
17
Service brake pedal
is depressed to slow or stop vehicle.
18
Dimmer switch
permits the operator to select high or low headlight beam.
19
Light switch
controls operation of vehicle service lights and blackout lights.
20
Directional signal /emergency flasher indicator light
illuminates during directional signal or
emergency flasher use.
2-3
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