TM-9-2350-311-20-1 Maintenance Manual for Volume 1 M109 Hull Download
Page 320 of 1275
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 TOOIS . . General mechanic’s tool kit (item 64, Appx H) Equipment Conditions Engine access door open (TM 9-2350-311-10) Multimeters (item 36, APPX H) Transmission access doors open (TM 9-2350-311-10) TA-1 probe kit (item 43, Appx H) Portable instrument panel cover removed (para 8-17) (Long test leads may be needed for some tests; Engine compartment access cover removed (para 11-5) 16 AWG wire may be used as an extension.) Personnel Required Disconnect lead 36 from engine 011 pressure transmitter. 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 lead 36 to ground. Check gage for reading. Turn MASTER switch OFF. Two . 1 A 1. 2. 3. 4. 5. Does ENGINE OIL PRESSURE gage read minimum when grounded and maximum when not grounded? Replace engine oil pressure transmitter (para 8-8). CONTINUED ON NEXT PAGE 3-220