TM-9-2320-361-24-1 Field Maintenance Manual Volume 1 for M44A2 Series Trucks
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TM 9-2320-361-24-1 0003 00 0003 00-26 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