TM 1-1520-238-T-7
10–261
10–106. AFT VERTICAL DISPLAY ON PILOT FUEL QUANTITY INDICATOR – DOES NOT
10–106
SHOW INCREASE WITH EXT TK SWITCH SET TO ON
Tools:
Nomenclature
Part Number
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 –
RW9 Access cover
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. On pilot FUEL panel, set EXT TK switch to ON.
Check for 28 VDC at P142–1.
Is voltage present?
YES
Go to step 2.
NO
Repair shorted wire between
P142–1 and (A402)TB2–11–K.
Go to paragraph 10–100.
2. Check for open between P142–5 and GS722–K.
Is voltage present?
YES
Repair open wire.
Go to paragraph 10–100.
NO
Go to step 3.
3. Have assistant check auxiliary fuel shutoff valve
for operation while EXT TK switch is cycled.
Does valve operate?
YES
Go to step 4.
NO
Replace right wing auxiliary fuel
shutoff valve
(TM 1-1520-238-23).
4. Check auxiliary fuel lines for damage.
Are auxiliary fuel lines damaged?
YES
Replace damaged lines
(TM 1-1520-238-23).
NO
Replace auxiliary fuel check
valve (TM 1-1520-238-23).
END OF TASK
