TM 1-1520-238-T-4
6–93
6–31.
OIL HOT NOSE GRBX 1 INDICATOR – LIGHTS
6–31
Tools:
Nomenclature
Part Number
Tool Kit, Electrical
SC518099CLA06
Repairer’s
Multimeter, Digital
AN/PSM-45
Personnel Required:
68F
Aircraft Electrician
References:
TM 1-1520-238-T-6
TM 1-1520-238-23
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.
Does indicator remain lighted?
YES
Refer to TM 1-1520-238-T-6 to
troubleshoot the pilot
caution/warning system.
NO
Go to step 2.
2. Check for short between J61–A and ground.
Does short exist?
YES
Repair shorted wire between
P18–52 and J61–A. Go to
paragraph 6–12.
NO
Replace NGB 1 oil temperature
probe (TM 1-1520-238-23).
END OF TASK
