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 ae. ELECTRIC FUEL PUMP CIRCUIT — CONTINUED ENGINE MISSES WHEN LOW ON FUEL; ONE OR BOTH FUEL PUMPS FAIL TO OPERATE Personnel Required General mechanic’s tool kit (item 64, Appx H) Two Multimeter (item 36, Appx H) Equipment Condtlons Hose (item 29, Appx H) Engine access doors open (TM (Long test leads may be needed for some tests; Powerplant removed (para 4-5) 16 AWG wire maybe used as an extension.) WARNING Do not use open flame or smoke when working on fuel system. An explosion may occur, causing severe injury or death. I m NOTE Left fuel pump can be tested from driver’s access panel. Powerplant must be removed to test right fuel pump. I Disconnect lead 76B from relay oil pressure 2. Place red lead of multimeter in lead 76B and black lead to ground. 3. Turn MASTER switch ON and check for voltage. 4. Turn MASTER switch OFF. Is voltage present? I Replace in-tank fuel pump system I I relay (para 8-35). RELAY OIL PRESSURE 9-2350-311-10) CONTINUED ON NEXT PAGE INITIAL SETUP Tools 1. switch. A 3-326