TM 9-2320-273-20
2-28. OIL MONITORING SYSTEM.
1.
ENGINE RUN SWITCH. Energizes 12-volt electrical system, including oil pressure gage
and warning light circuits.
2.
OIL PRESSURE GAGE. Needle activated by electrical signal from oil pressure sending unit
indicates engine oil pressure.
3.
OIL WARNING LIGHT. Indicator light is activated by 12-volt power from pressure switch
when engine oil pressure drops below 5 psi (34 kPa).
4.
ClRCUIT BREAKER (CB-6). Protects electrical components of oil system by opening circuit
when load exceeds 20 amps. Automatically recycles until overload is removed.
5.
PRESSURE SWITCH. Closes when oil pressure drops below 5 psi (34 kPa) and supplies
12-volt power to oil warning indicator.
6.
OIL PRESSURE SENDING UNIT. Provides electrical signal to oil pressure gage to indicate
oil pressure.
2-26
