TM 55-1930-209-14&P-8 Table 4-1.  Fuel Oil System Troubleshooting (Continued) Condition Possible Cause Suggested Action 4.  Port and starboard a.  Monitoring system a.  Troubleshoot system as tanks overflowed malfunctioning described in TM 55-1930-209-14&P-11 b.  Liquid level switch b.  Repair or malfunctioning replace switch c.  Fuel oil visual level c.  Unclog or repair indicator clogged or indicator damaged d.  Tank filling operation not d.  Station crew- being observed by crew- member at tank member being filled B.  Transferring fuel oil from storage tanks to day tank (paragraph 3-3.2): 1.  Fuel will not a.  Fuel oil transfer pump a.  Close circuit transfer from port circuit breaker 2P5 breakers storage tank power panel 1 open (OFF) or P5 on switchboard open (OFF) b.  Pump not operating b.  Troubleshoot as because: follows: (1) Motor controller off (1) Start pump (2) Fuse in motor (2) Replace controller blown fuse (3) Pump malfunctioning (3) Troubleshoot pump per pages 5-8, Appendix B (4) Remote stop switch (4) Repair or malfunctioning replace switch (5) Liquid high level switch (5) Repair or malfunctioning replace high level switch c.  Pump motor controller c.  Troubleshoot con- malfunctioning (loose troller as described wiring, broken connectors, in TM 55-1930-209-14&P-9 etc.) d.  FO valve(s) 8,10, 21 or 22 d.  Open valve(s) closed e.  Fuel filter clogged e.  Clean or change filter f.  Fuel oil line or check f.  Isolate, clear valve clogged or damaged or repair clogged line.  Check valve 2.  Fuel will not transfer a.  Fuel oil transfer pump cir- a.  Close circuit breaker from starboard storage cuit breaker 2P5 on tank power panel 1 open (OFF) 4-3