TM-9-2815-220-24 Maintenance Manual for AVDS-1790-2CA AVDS-1790-DA and AVDS-1790-2DR Engines Download
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TM 9-2815-220-24 THEORY OF OPERATION 0004 00 TRANSMITTERS Engine Models 2CA & 2DA A C Low Oil Pressure Warning Light Switch: The low oil pressure warning light switch (A) is located at the lower right side of the crankshaft damper and oil filter housing. The electrical contact points in this switch close when the oil pressure in the main oil gallery is below 11 ± 2 psi. Completion of the electrical circuit lights the low pressure warning lamp on the vehicle instrument panel. B Oil Temperature Transmitter: The oil temperature gauge transmitter (B) is located at the upper right side of the crankshaft damper and oil filter housing above the oil pressure regulator valve. B Engine Model 2DR A C High Oil Temperature Warning Light Switch The high oil temperature warning light switch (C) is located in the oil passage above the oil pressure warning light switch in the right side of the crankshaft damper and oil filter housing. The warning light sending switch thermostatically-controlled electrical contact points close when oil temperatures in the engine main oil passage reaches 245 ± 5 °F. Completion of the electrical circuit lights the oil high temperature warning lamp on the vehicle instrument panel. WP 0004 00-28