TM-9-2350-311-20-2 Maintenance Manual Volume 2 for M109 Cab Download
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TM 9–2350–311–20–2 3–134 3–3 TROUBLESHOOTING — CONTINUED j. NBC SYSTEM CIRCUIT — CONTINUED (5) NBC CONTROL BOX ASSEMBLY INDICATOR LIGHT ILLUMINATES, BUT CANNONEER NO. 1’S M3 ELECTRICAL AIR HEATER DOES NOT OPERATE. — CONTINUED Repair wire 8 (para 17–4). C CONTINUED FROM STEP B Replace J2 connector on NBC control box assembly (para 17–4). yes no END OF TASK PIN A – J2 CONNECTOR WIRE 8 1. Reconnect wire 136B to cannoneer no. 1’s M3 electrical air heater. 2. Place one multimeter lead in socket A and other lead to pin A of J2 connector on NBC control box assembly. 3. Check for continuity. Is continuity present? Repair wire 136B of NBC power lead assembly (para 8–9). yes no J2 CONNECTOR + SOCKET A NBC CONTROL BOX ASSEMBLY C