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 h. FLAME HEATER CIRCUIT (ENGINE MODEL FLAME HEATER DOES NOT OPERATE — CONTINUED 7083-7396) — CONTINUED CONTINUED FROM STEP I 2. 3. 4. 5. 6. 7. 8. Reconnect FLAME HEATER switch lead to bulkhead-to-portable instrument panel wiring harness. Disconnect battery ground leads. Disconnect bulkhead-to-portable instrument panel wiring harness from driver’s bulkhead. Place a jumper wire from pin B to socket B (lead 400-459B). Place red lead of multimeters on pin C (lead 486) and black lead to ground. Reconnect battery ground leads. Turn MASTER and FLAME HEATER switches ON and check for voltage. Turn MASTER and FLAME HEATER switches OFF. Is voltage present? Repair or replace lead 486 of bulkhead-to-portable instrument panel wiring harness (para 8-49). 1. Reconnect bulkhead-to-portable instrument panel wiring harness to driver’s bulkhead. 2. Disconnect engine disconnect to bulkhead wiring harness from engine disconnect bracket. 3. Place red lead of multimeters in socket A (lead 486) and black lead to ground. 4. Turn MASTER and FLAME HEATER switches ON and check for voltage. 5. Turn MASTER and FLAME HEATER switches OFF. Is voltage present? CONTINUED ON NEXT PAGE 3-112