TM 1-1520-238-T-4
4–135
4–51.
OIL PSI ENG 1 INDICATOR – IS LIGHTED WITH ENGINE OIL PSI X 10 INDICATING
4–51
MORE THAN 22 PSI
Tools:
Nomenclature
Part Number
Tool Kit, Electrical
SC518099CLA06
Repairer’s
Multimeter, Digital
AN/PSM-45
Personnel Required:
68F
Aircraft Electrician
One person to assist
References:
TM 1-1520-238-T-5
TM 1-1520-238-T-6
WARNING
Turn off power before detaching or
attaching wires and connectors. High
current 28 VDC or 115 VAC is present.
Failure to do so could result in death or
serious injury.
1. Detach P18.
Is OIL PSI ENG 1 indicator lighted?
YES
Refer to TM 1-1520-238-T-6 to
troubleshoot pilot
caution/warning system.
NO
Go to step 2.
2. Check for short between P18–7 and P70–5.
Does short exist?
YES
Repair shorted wire.
Go to paragraph 4–12.
NO
Refer to TM 1-1520-238-T-5 to
troubleshoot engine
instruments.
END OF TASK
