TM 1-1520-238-T-7 11–426 Change 5 11–125. ND/NU SET TO ND – TOP PISTON FAILS TO MOVE STABILATOR 11–125 Tools: Nomenclature Part Number Tool Kit, Electrical SC518099CLA06 Repairer’s Multimeter, Digital AN/PSM-45 Extractor, Relay CTJ-RO6 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 P995 from (L46)J995. Momentarily press PLT NU/ND switch to ND. Check for 28 VDC between P995–K(HI) and P995–J(LO). Is voltage present? YES Replace top STAB ACTUATOR (L46) (TM 1-1520-238-23). NO Go to step 2. 2. Open STAB MAN DC (A76)CB6, STAB AUTO DC (A76)CB3, STAB AUTO AC (A76)CB2, and ENG WARN (A76)CB52 circuit breakers. Detach P427 from (A402)J28. Check for open between (A402): J28–A and TB2–24–B. Does open exist? YES Repair open wire. Go to paragraph 11–88. NO Go to step 3. 3. Detach P1077 from (A329)J1. Check for open between P427–A and P1077–k. Does open exist? YES Repair open wire. Go to paragraph 11–88. NO Go to step 4. 4. Check for open between (A329): J1–k and XK1–5–B1. Does open exist? YES Repair open wire. Go to paragraph 11–88. NO Go to step 5. 5. Check for open between (A323)XK1–3–B3 and GS4–B. Does open exist? YES Repair open wire. Go to paragraph 11–88. NO Replace MAN CONT NOSE DOWN relay (A329)K1–5, or AUTO/MAN PWR relay (A329)K1–1/2, or MAN CONT NOSE UP relay (A323)K1–3 (TM 1-1520-238-23). END OF TASK