TM 1-1520-238-T-7
10–123
10–31. ENGINE 1 FUEL CROSSFEED/SHUTOFF VALVE INDICATOR – DOES NOT MOVE
10–31
TO NORMAL POSITION
Tools:
Nomenclature
Part Number
Tool Kit, Aircraft
SC518099CLA01
Mechanic’s
Tool Kit, Electrical
SC518099CLA06
Repairer’s
Multimeter, Digital
AN/PSM-45
Personnel Required:
68X
Armament/Electrical Systems Repairer
One person to assist
References:
TM 1-1520-238-23
Equipment Conditions:
Ref
Condition
TM 1-1520-238-23
Access provisions –
L200 removed
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. Check for 28 VDC at P938-4.
Is voltage present?
YES
(AAG) Go to step 3.
(ABC) Go to step 4.
NO
Go to step 2.
2. Check for open between P179-A1 and P938-4.
Does open exist?
YES
Repair open wire.
Go to paragraph 10–17.
NO
Replace pilot FUEL panel
(TM 1-1520-238-23).
3. (AAG) Check for open between P938-5 and
GS570-K.
Does open exist?
YES
Repair open wire.
Go to paragraph 10–17.
NO
Replace engine 1 fuel
crossfeed/shutoff valve
(TM 1-1520-238-23).
4. (ABC) Check for open between P938-5 and
GS578-A.
Does open exist?
YES
Repair open wire.
Go to paragraph 10–17.
NO
Replace engine 1 fuel
crossfeed/shutoff valve
(TM 1-1520-238-23).
END OF TASK
