TM-9-2320-361-24-1
2-1/2 TON, 6X6, M44A2 SERIES TRUCKS
TECHNICAL MANUAL; FIELD AND SUSTAINMENT MAINTENANCE PART 1 OF 2
AUGUST 2006
TM-9-2320-361-24-1 - Page 88 of 1176
TM 9-2320-361-24-1
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THEORY OF OPERATION (Contd)
GAUGE AND WARNING SYSTEM
Gauge and Warning System Operation:
The major components of the gauge and sending unit system
are as follows:
A. OIL PRESSURE GAUGE
– Indicates pressure of oil circulating through vehicle engine. Receives
electrical current from oil pressure sending unit located on engine block.
B. ENGINE TEMPERATURE GAUGE
– Indicates temperature of engine coolant circulating through
engine. Receives electrical current from engine temperature sending unit located on engine block.
C. WARNING BUZZER (LOW AIR)
– Produces a loud sound to warn vehicle operator that the air
pressure is below 60 psi (413 kPa).
D. LOW AIR PRESSURE SWITCH
– Activates warning buzzer to sound when pressure in compressed
air system is below 60 psi (413 kPa).
E. BATTERY/GENERATOR GAUGE
– Indicates amount of voltage in electrical system provided by
batteries and alternator.
F. FUEL GAUGE
– Indicates amount of fuel in fuel tank. Receives electrical current from fuel tank
sending unit located in fuel tank.
END OF WORK PACKAGE
OIL PRESSURE
SENDING UNIT
TEMPERATURE
SENDING UNIT
ACCESSORY
SWITCH
FUEL TANK
SENDING UNIT
B
A
C
D
E
F
28
27
27
85
85
33
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