TM-9-2350-311-20-2 Maintenance Manual Volume 2 for M109 Cab Download
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TM 9–2350–311–20–2 3–127 1. Place one multimeter lead on X2 terminal of electromagnetic relay K1 and other lead on terminal 3 of switch S1. 2. Check for continuity. Is continuity present? 1. Turn CAB NBC POWER switch to OFF. 2. Connect wire 100 to J1 connector of NBC control box assembly. 3. Place one multimeter lead on A2 terminal of electromagnetic relay K1 and other lead to terminal B of circuit breaker CB1. 4. Check for continuity. Is continuity present? 1. Turn CAB NBC POWER switch to ON. 2. Place one multimeter lead on terminal 2 and other lead on terminal 3 of switch S1. 3. Check for continuity. Is continuity present? Replace switch S1 (ref. page 15.1–15). yes no yes no Replace switch S1 (para 17–4). CONTINUED ON NEXT PAGE Repair wire 6 (para 17–4). F G H CONTINUED FROM STEP E TERMINAL 2 SWITCH S1 TERMINAL 3 + – TERMINAL 3 WIRE 6 RELAY K1 A2 TERMINAL + – + – SWITCH S1 X2 TERMINAL WIRE 2 J1 CONNECTOR WIRE 100 RELAY K1 NBC CONTROL BOX ASSEMBLY CIRCUIT BREAKER CB1