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

TM 9-2320-279-20-1

Troubleshooting Malfunctions (Cont)

Table 2-9. Troubleshooting (Cont)

Malfunction

Test or Inspection

Corrective Action

TANKER SYSTEM (CONT)

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

DELIVER RATED FLOW (CONT).

Step 4. Check for defective air actuator system. Remove airhose from V5 air actuated flow valve.

Operate HAV HAND ACTUATED CONTROL VALVE (TM 9-2320-279-10). Check for air

blowing out of hose and for continuous exhausting of air from HAV HAND ACTUATED

CONTROL VALVE.

If no air, or if HAV HAND ACTUATED CONTROL VALVE continuously exhausts air,

repair HAV HAND ACTUATED CONTROL VALVE (para 18-16).

Step 5. Check that V5 air actuated flow valve fully opens. Open V5 air actuated flow valve with

wrench.

Replace defective V5 air actuated flow valve (para 25-19).

Step 6. Check flow limiting valve and piping for damage, dirt, and debris (para 25-11, pipes 5

and 8).

Remove dirt and debris from flow limiting valve and piping. Replace damaged

piping. Replace damaged flow limiting valve (para 25-34).

Step 7. Remove filter-separator cover (para 23-4). Check for dirt and debris.

Replace dirty filter-separator elements.

Step 8. Remove V6 FUEL/DEFUEL CONTROL VALVE (para 25-20) and piping (para 25-11). Check

for damage, dirt, and debris.

Remove dirt and debris. Replace damaged V6 FUEL/DEFUEL CONTROL VALVE.

Step 9. Remove eductor (para 25-33) and piping (para 25-11). Check for damage, dirt, and debris.

Remove dirt and debris. Replace damaged eductor or damaged piping.