TM 5-3805-258-24-1
SYSTEMS OPERATION
OPERATOR’S STATION
INDIVIDUAL CIRCUIT DESCRIPTION
B. Engine Coolant Temperature
The engine coolant temperature circuit has a normally closed 7N9785 Tem-
perature Switch that opens if the coolant temperature goes above 107°C
(225°F). If the switch opens, the coolant temperature indicator on the operator
panel turns ON. The operator panel also sends current to turn ON the master
fault light. The engine coolant switch circuit connects to Pin 6 of the operator
panel. Pin 11 of the operator panel goes to the master fault light.
ENGINE COOLANT TEMPERATURE
1. Engine coolant temperature switch.
Engine Coolant Temperature Circuit
3-155
