TM 1-1520-238-T-7
10–140
Change 4
10–44. FUEL BST CIRCUIT BREAKER – DOES NOT STAY CLOSED WITH CPG FUEL
10–44
PANEL ORIDE SWITCH SET TO CPG
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
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 P191 from (A179)J1. Check for short
between P191–B10 and ground.
Does short exist?
YES
Go to step 2.
NO
Replace CPG FUEL panel
(TM 1-1520-238-23).
2. Detach P174 from (A131)J1. Check for short
between (A131)J1–A17 and ground.
Does short exist?
YES
Go to step 3.
NO
Repair shorted wire between
(A131)J1–A17 and ground. Go
to paragraph 10–17.
3. Detach P179 from (A131)J2. Check for short
between P179–B5 and ground.
Does short exist?
YES
Go to step 4.
NO
Replace Pilot Fuel panel
(TM 1-1520-238-23).
4. Detach P242 from (L15). Check for short
between:
P242–A and ground,
P242–B and ground.
Does short exist?
YES
Repair shorted wire between
P242–A and ground.
Go to paragraph 10–17.
NO
Replace boost pump air valve
(TM 1-1520-238-23).
END OF TASK
