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 q. TRANSMISSION OIL PRESSURE INDICATOR TRANSMISSION OIL PRESSURE INDICATOR NEEDLE CIRCUIT — CONTINUED FAILS TO MOVE OR IS UNSTEADY; ALL OTHER GAGES OPERATE PROPERLY — CONTINUED CONTINUED FROM STEP D I F 1. Reconnect lead 27 to circuit breaker output. 2. Disconnect lead 10 from circuit breaker input. 3. Place red lead of multimeters in lead 10 and black lead to ground. 4. Turn MASTER switch ON and check for voltage. 5. Turn MASTER switch OFF. Is voltage present? (para 3-3b) Troubleshoot master relay circuit Replace circuit breaker (para 8-33, M109A2/M109A3; 8-34, M109A4/M109A5). I 3-214