TM-9-2350-311-20-1 Maintenance Manual for Volume 1 M109 Hull Download
Page 285 of 1275
TM 9-2350-311-20-1 CONTINUED FROM STEP A I 1. Reconnect lead 33A to engine coolant B temperature transmitter. 2. Disconnect lead 33A from ENGINE WATER TEMP gage. 3. Turn MASTER switch ON and ENGINE WATER TEMP gage check for reading. 4. If ENGINE WATER TEMP gage shows a minimum reading, use a jumper wire to ground gage. 5. Check gage for reading. 6. Turn MASTER switch OFF. Does ENGINE WATER TEMP gage show minimum when not grounded, and maximum when grounded? Go to step F. c 1. Reconnect lead 33A to ENGINE WATER TEMP gage. 2. Disconnect battery ground leads. 3. Disconnect bulkhead-to-portable instrument panel wiring harness from portable instrument panel bracket. 4. Place jumper wires from pin A to socket A (lead 27), from socket P (lead 459B) to socket C (lead 459). 5. Reconnect battery ground leads. 6. Turn MASTER switch ON and check ENGINE WATER TEMP gage for reading. 7. If gage shows a minimum reading, place a jumper wire from pin K (lead 33A) to ground. 8. Check gage for reading. 9. Turn MASTER switch OFF. Does ENGINE WATER TEMP gage show minimum when not grounded, and maximum when grounded? I Repair or replace lead 33A of I portable instrument panel wiring harness (para 8-57). CONTINUED ON NEXT PAGE 3-185