TM-9-2350-311-20-1 Maintenance Manual for Volume 1 M109 Hull Download
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TM 9-2350-311 -20-1 3-3 TROUBLESHOOTING CHART — CONTINUED o. ENGINE WATER TEMP INDICATOR CIRCUIT — (3) ENGINE LOW LEVEL COOLANT LIGHT FAILS TO CONTINUED LIGHT WHEN ENGINE COOLANT LEVEL IS LOW; OPERATES WHEN PRESSED-TO-TEST — CONTINUED CONTINUED FROM STEP C 1. Reconnect bulkhead-to-portable instrument panel wiring harness to driver’s bulkhead. 2. Disconnect bulkhead-to-engine bracket wiring harness from engine disconnect bracket. 3. Place a jumper wire from socket N (lead 3526) to ground. 4. Turn MASTER switch ON and press COOLANT indicator light. 5. Turn MASTER switch OFF. Does COOLANT indicator light operate? I Repair or replace lead 352B of engine disconnect-to-bulkhead wiring harness (para 8-45, M109A2/M109A4; 8-46, M109A4/M10A5). CONTINUED ON NEXT PAGE 3-198