TM 1-1520-238-T-5 7–127 7–44. EMERGENCY HYDRAULIC FLIGHT CONTROLS – DO NOT FUNCTION PROPERLY 7–44 Tools: Nomenclature Part Number Tool Kit, Electrical SC518099CLA06 Repairer’s Multimeter, Digital AN/PSM-45 Personnel Required: 68X Armament/Electrical Systems Repairer (2) References: TM 1-1520-238-T-6 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. Check EMERG HYD circuit breaker. Is circuit breaker closed? YES Go to step 2. NO Go to paragraph 7–43. 2. Set EMERG HYD switch to EMERG HYD. Check for 28 VDC at P238–13. Is voltage present? YES Go to step 3. NO Go to step 5. 3. Check for open between P238–4 and GS631–B. Does open exist? YES Repair open wire. Go to paragraph 7–21. NO Go to step 4. 4. Remove utility hydraulic manifold override solenoid (TM 1-1520-238-23). Check for open between (HP2): J1–13 and J4–A, J1–4 and J4–D. Does open exist? YES Replace utility hydraulic manifold (TM 1-1520-238-23). NO Replace utility hydraulic manifold override solenoid (TM 1-1520-238-23). 5. Check for 28 VDC at P527–A7. Is voltage present? YES Go to step 6. NO Go to step 7. 6. Check for open between J527–A7 and P238–13. Does open exist? YES Repair open wire. Go to paragraph 7–21. NO Replace pilot EMERG HYD switch S2. Go to paragraph 7–21. 7. Check for 28 VDC at (A76)J1–K. Is voltage present? YES Repair open wire between P463–K and P527–A7. NO Refer to TM 1-1520-238-T-6 to troubleshoot circuit protection system (dc emergency bus – pilot station). END OF TASK