TM 1-1520-238-T-7 10–130.8 Change 5 10–35E. FUEL XFEED CIRCUIT BREAKER DOES NOT STAY CLOSED WITH ENGINE 1 AND 10–35E ENGINE 2 CROSSFEED VALVES AT AFT (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-A13 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-A13 and ground. Does short exist? YES Repair shorted wire between: P174–A13 and P938–6. Go to paragraph 10–17. NO Go to step 3. 3. Check for short between (L1)J1–6 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 P938–7 and ground. Does short exist? YES Repair shorted wire between P938–7 and P457–A3. Go to paragraph 10–17. NO Go to step 5. 5. Detach wire at (A402)TB2–31–Y. Check for short between (A402)J22–A3 and ground. Does short exist? YES Repair shorted wire between (A402): J22–A3 and TB2–31–Y. Go to paragraph 10–17. NO Go to step 6. 6. Detach P442. Check for short between (A402)TB2–31–Z and ground. Does short exist? YES Repair shorted wire between (A402): TB2–31–Z and J5–B6. Go to paragraph 10–17. NO Go to step 7. 7. Detach 939. Check for short between: P442–B6 and ground, P442–B7 and ground. Does short exist? YES Repair shorted wire between: P442–B6 and P939–9, P442–B7 and P939–10. Go to paragraph 10–17. NO Go to step 8.