CANNOT EVACUATE FUEL FROM HOSES OR PRIMARY PUMP STOPS OR FAILS TO DELIVER RATED FLOW.

9-2320-279-20-1

Troubleshooting Malfunctions (Cont)

2-15. TROUBLESHOOTING INSTRUCTIONS (CONT).

Table 2-9. Troubleshooting (Cont)

Malfunction

Test or Inspection

Corrective Action

TANKER SYSTEM (CONT)

FUEL SERVICING RATE IS SLOW OR NO FLOW (CONT).

Step 5. Remove V7/V8 REEL VALVE piping (para 25-11 and 25-22). Check for damage, dirt, and

debris in or around V7/V8 REEL VALVE and in piping.

Remove dirt and debris. Replaced damaged V7/V8 REEL VALVE and piping.

Step 6. Remove piping from both sides of flowmeter (para 25-11). Check piping and flowmeter for

damage, dirt, and debris.

Remove dirt and debris. Replace damaged piping. If flowmeter is damaged, notify

the supervisor.

Step 7. Check MC MANUAL CONTROL VALVE cable adjustment (para 25-15).

Adjust MC MANUAL CONTROL VALVE cable.

Step 8. Check pressure on DLPG DISCHARGE LINE PRESSURE GAGE while operating pump

(TM 9-2320-279-10).

If DLPG DISCHARGE LINE PRESSURE GAGE indicates less than 10 psi (69 kPa),

replace servicing pump (AUXILIARY PUMP - para 25-7, primary pump - para 25-6).

Step 9. If flow problem remains, notify the supervisor.

CANNOT EVACUATE FUEL FROM HOSES OR PRIMARY PUMP STOPS OR FAILS TO

DELIVER RATED FLOW.

Step 1. Open manhole. Check if fuel flows into tank from V9 CHECK VALVE when V6

FUEL/DEFUEL CONTROL VALVE is set to DEFUEL and primary pump is operated

(TM 9-2320-279-10).

If not, go to Step 2.

If fuel flows, go to Step 13.

Step 2. Check if V3 suction line valve is binding or sticking when opening or closing

(TM 9-2320-279-10).

Replace binding or sticking V3 suction line valve (para 25-17).

Step 3. Check pressure on DLPG DISCHARGE LINE PRESSURE GAGE while operating primary

pump (TM 9-2320-279-10).

If DLPG DISCHARGE LINE PRESSURE GAGE indicates less than 10 psi (69 kPa),

replace primary pump (para 25-6).