TM-9-2350-311-20-1 Maintenance Manual for Volume 1 M109 Hull Download
Page 163 of 1275
TM9-2350-311-20-1 CONTINUED FROM STEP A B 1. Remove fuel pressure transducer at secondary fuel filter (para 6-7). 2. Install appropriate pressure gage (para 6-7). 3. Start engine and run at idle (TM 9-2350-31 1-10). Pressure should be 40 to 70 psi (276 to 483 kPa) at 1500 to 2300 rpm. Is fuel pressure below 40 psi (276 kPa)? Go to step F. 1. Install fuel pressure transducer at secondary fuel filter (para 6-7). 2. Place a 100 psi (690 kPa) gage with a tee fitting in the primary fuel filter inlet. 3. Disconnect connector from the fuel pump relay. 4. Place a jumper wire from socket A to socket c. 5. Turn MASTER switch ON and check gage. Is fuel pressure at least 4 psi (28 kPa)? I Troubleshoot MASTER WARNING light circuit. I Are fuel lines free of leaks and/or restrictions? Tighten lines that leak. If leaks persist, replace lines. Repair or replace restricted lines. CONTINUED ON NEXT PAGE 3-63