TM-9-2350-311-20-2 Maintenance Manual Volume 2 for M109 Cab Download
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TM 9–2350–311–20–2 3–132 3–3 TROUBLESHOOTING — CONTINUED j. NBC SYSTEM CIRCUIT — CONTINUED (4) NBC CONTROL BOX ASSEMBLY INDICATOR LIGHT ILLUMINATES, BUT GUNNER’S M3 ELECTRICAL AIR HEATER DOES NOT OPER- ATE. — CONTINUED 1. Reconnect wire 136A to gunner’s M3 electrical air heater. 2. Place one multimeter lead in socket E and other lead to pin E of J2 connector on NBC control box assembly. 3. Check for continuity. Is continuity present? Repair wire 11 (para 17–4). C yes no CONTINUED FROM STEP B Replace J2 connector on NBC control box assembly (para 17–4). END OF TASK + – WIRE 11 J2 CONNECTOR PIN E J2 CONNECTOR SOCKET E yes no Repair wire 136A of NBC power lead assem- bly (para 8–9).