TM 1-1520-238-T-7
10–130.14
Change 5
10–35H.
FUEL XFEED CIRCUIT BREAKER DOES NOT STAY CLOSED WITH
10–35H
ENGINE 1 AND ENGINE 2 CROSSFEED VALVES AT FORWARD (ADB)
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
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. Check for short between P174-A16 and ground.
Does short exist?
YES
Go to step 2.
NO
Replace pilot FUEL Panel
(TM 1-1520-238-23).
2. Detach P938. Check for short between
P174-A16 and ground.
Does short exist?
YES
Repair shorted wire between
P174–A16 and P938–9.
Go to paragraph 10–17.
NO
Go to step 3.
3. Check for short between (L1)J1–9 and ground.
Does short exist?
YES
Replace engine 1 fuel
crossfeed/shutoff valve
(TM 1-1520-238-23).
NO
Go to step 4.
4. Detach P457. Check for short between P938–10
and ground.
Does short exist?
YES
Repair shorted wire between
P938–10 and P457–A9.
Go to paragraph 10–17.
NO
Go to step 5.
5. Detach wire at (A402)TB2–31–T. Check for short
between (A402)J22–A9 and ground.
Does short exist?
YES
Repair shorted wire between
(A402):
J22–A9 and TB2–31–T.
Go to paragraph 10–17.
NO
Go to step 6.
6. Detach P442. Check for short between
(A402)TB2–31–W and ground.
Does short exist?
YES
Repair shorted wire between
(A402):
TB2–31–W and J5–B2.
Go to paragraph 10–17.
NO
Go to step 7.
7. Detach 939. Check for short between:
P442–B2 and ground,
P442–B5 and ground.
Does short exist?
YES
Repair shorted wire between:
P442–B2 and P939–6,
P442–B5 and P939–7.
Go to paragraph 10–17.
NO
Go to step 8.
