TM 1-1520-238-T-7
10–259
10–104. BOTH VERTICAL DISPLAYS ON PILOT FUEL QUANTITY INDICATOR – DO NOT
10–104
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-T-5
TM 1-1520-238-23
Equipment Conditions:
Ref
Condition
TM 1-1520-238-23
Access provisions –
L200, and electrical power
distribution box 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. Have assistant on aft deck to check auxiliary fuel
tank pressure control valve. On pilot FUEL
panel, set EXT TK switch to ON.
Does auxiliary fuel tank pressure valve
open?
YES
Go to step 2.
NO
Go to paragraph 10–102.
2. Apply external pressurized air
(TM 1-1520-238-23). Have assistant check tank
connections lines, hoses and pressure fuel
manifold connections for leaks.
Are leaks present?
YES
Replace leaking component
(TM 1-1520-238-23).
NO
Go to step 3.
3. Check for open between P174–A1 and
(A402)TB2–11–L.
Does open exist?
YES
Repair open wire.
Go to paragraph 10–100.
NO
Refer to TM 1-1520-238-T-5 to
troubleshoot PAS.
END OF TASK
