GAUGE AND WARNING SYSTEM

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.

TEMPERATURE

SENDING UNIT

OIL PRESSURE

SENDING UNIT

FUEL TANK

ACCESSORY

SENDING UNIT

SWITCH

END OF WORK PACKAGE

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