TM 5-3805-254-20-1
ELECTRICAL SYSTEM - CONTINUED
ENGINE WATER TEMPERATURE SAFETY SWITCH
Current supplied through KEY SWITCH when turned on. When engine coolant temperature reaches a preset
temperature, a bi-metallic strip bends, connecting contact points and completing circuit. This energizes engine shutdown
bell and fuel shutoff to shut down engine.
FUEL GAGE SENDING UNIT
Current supplied through fuel gage. Float movement alters resistance level through a rheostat as fuel level increases or
decreases. Regulated current is transmitted to fuel gage needle to Indicate fuel level. Located on front fuel tank only.
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