TM 55-1520-240-T Change 24    16-2.1 CHAPTER 16 MISSION EQUIPMENT TROUBLESHOOTING CHAPTER OVERVIEW Chapter 16 contains procedures for Mission Equipment troubleshooting.  Each system and failure symptom is listed below.  Included in this chapter are locations and views of all electrical connectors, receptacles, relays, and ground connections for the Mission Equipment. Refer to TM 55-1520-240-23 for required maintenance procedures. SYSTEM PARA EXTERNAL CARGO HOOK SYSTEM 16-1 FLARE DISPENSER SYSTEM 16-2 ENGINE AIR PARTICLE SEPARATOR SYSTEM 16-3 HEAD UP DISPLAY SYSTEM 16-4 COUNTERMEASURES DISPENSER SYSTEM 16-5 FAILURE SYMPTOM LIST EXTERNAL CARGO HOOK SYSTEM SYMPTOM TASK FWD OR AFT HOOK LOADED LIGHT IS LIT WHEN CARGO HOOK IS UNLOADED 16-1.5 FORWARD OR AFT HOOK LOADED LIGHT DOES NOT COME ON WHEN PRESSED 16-1.6 CARGO HOOK PWR EMER REL CIRCUIT BREAKER DOES NOT STAY CLOSED 16-1.7 CARGO HOOK CONT EMER REL CIRCUIT BREAKER DOES NOT STAY CLOSED 16-1.8 CARGO HOOK PWR NORM RLSE CIRCUIT BREAKER DOES NOT STAY CLOSED 16-1.9 CARGO HOOK CONT NORM RLSE CIRCUIT BREAKER DOES NOT STAY CLOSED 16-1.10 FWD HOOK OPEN CAPSULE LIT WHEN FORWARD CARGO HOOK CLOSED 16-1.11 MID HOOK OPEN CAPSULE LIT WHEN CENTER CAR- GO HOOK CLOSED 16-1.12 AFT HOOK OPEN CAPSULE IT WHEN AFT CARGO HOOK CLOSED 16-1.13 SYMPTOM TASK DUAL HOOK FAULT CAPSULE LIT 16-1.14 DUAL HOOK RELAY BOX LIGHT(S) DO NOT COME ON WHEN PRESSED 16-1.15 DUAL HOOK FAULT LIGHT DOES NOT COME ON WITH HOOK DISCONNECTED 16-1.16 ARMED SW FAIL LIGHT DOES NOT COME ON WITH MASTER SWITCH AT ARM 16-1.17 RELEASE SW FAIL LIGHT OR GROUND RELAY ACTI- VATE LIGHT NOT ON WHEN PILOT’S CARGO HOOK RELEASE SWITCH PRESSED 16-1.18 RELEASE SW FAIL LIGHT OR GROUND RELAY ACTI- VATE LIGHT NOT ON WHEN COPILOT’S CARGO HOOK RELEASE SWITCH PRESSED 16-1.19 RELEASE SW FAIL LIGHT OR GROUND RELAY ACTI- VATE LIGHT NOT ON WHEN HOIST OPERATOR’S CARGO HOOK RELEASE SWITCH PRESSED 16-1.20 FORWARD CARGO HOOK DOES NOT OPEN 16-1.21 SYMPTOM TASK FWD HOOK OPEN CAPSULE DOES NOT COME ON WHEN FORWARD CARGO HOOK CLOSED 16-1.22 CENTER CARGO HOOK DOES NOT OPEN 16-1.23 MID HOOK OPEN CAPSULE DOES NOT COME ON WHEN CENTER CARGO HOOK OPENS 16-1.24 AFT CARGO HOOK DOES NOT OPEN 16-1.25 AFT HOOK OPEN CAPSULE DOES NOT COME ON WHEN AFT CARGO HOOK OPENS 16-1.26 CARGO HOOK OR HOOKS DO NOT RELEASE WHEN EMER SWITCH SET TO REL ALL 16-1.27 CENTER CARGO HOOK DOES NOT STAY OPEN FOR 10 TO 14 SECONDS AFTER EMERG SWITCH RE- LEASED FROM REL ALL 16-1.28 FORWARD OR AFT CARGO HOOK DOES NOT OPEN WHEN TANDEM HOOK RELEASE LEVER IS PULLED 16-1.29 HOOK LOADED LIGHT DOES NOT COME ON WHEN FORWARD OR AFT CARGO HOOK IS LOADED 16-1.30 GO TO NEXT PAGE FAILURE SYMPTOM LIST (Continued)