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 r. ENGINE OIL PRESSURE GAGE CIRCUIT — ENGINE OIL PRESSURE INDICATOR FAILS TO CONTINUED OPERATE WITH ENGINE RUNNING; ALL OTHER INSTRUMENTS OPERATE — CONTINUED CONTINUED FROM STEP H T - 1 Reconnect engine disconnect-to-bulkhead 2. 3. 4. 5. 6. wiring harmess to drivers bulkhead. Disconnect engine disconnect-to-bulkhead wiring harness from engine disconnect. Turn MASTER switch ON and check ENGINE OIL PRESSURE gage for a reading. If ENGINE OIL PRESSURE gage shows a maximum reading, place a jumper wire from socket D (lead 36) to ground. Check gage for reading. Turn MASTER switch OFF. Does ENGINE OIL PRESSURE gage show minimum when grounded and maximum when not grounded? I Repair or replace lead 36 from engine disconnect-to-bulkhead wiring harness (para 8-45, M109A2/M109A3; para 8-46, M109A4/M109A5). Repair or replace lead 36 of powerplant wrong harness (para 8-43, M109A2/ M109A3; para 8-44, M109A4/M109A5). END OF TASK 3-226