TM 9-2320-356-14
Table 4-9. Unit Troubleshooting (Con't).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
PIPING CONTROL COMPONENTS
28. EMERGENCY VALVE WILL NOT OPEN OR CLOSE OR LEAKS OCCUR.
Step 1.
Inspect for loose cable at valve operator A and at the emergency valve (fig. 4-90).
a. Tighten cable connecting U-bolt and nuts at emergency valve.
Check for loose nut on stuffing box.
Step 2.
Tighten nut if loose.
Check if nuts on flange are loose.
Step 3.
Tighten loose nuts. If nuts are not loose and leakage is around flange, notify direct support
maintenance.
29. EMERGENCY VALVE CONTROL OPERATES IMPROPERLY.
Step 1.
Check for loose cable at valve operator A (fig. 4-90).
Tighten nut on connector bolt.
Check tension on trip lever or release lever (fig. 4-90).
Step 2.
a. If spring is broken, replace.
b. Tighten adjusting bolt and nut on trip link.
30. GATE VALVES OPERATE IMPROPERLY.
Inspect for leaks around hand wheel stem.
Open valve to raise lock housing. Tighten stuffing box nut.
FUELING OPERATIONS
31. FUEL DOES NOT FLOW DURING ANY NON-FILTERED FUELING OPERATIONS.
Check if emergency valve can open, Open valve by operating emergency valve control A (fig. 4-90).
If valve does not open, adjust, repair, or replace emergency valve control and cables
32. FUEL DOES NOT FLOW DURING ANY FILTERED OPERATION (M969, M969A1, M970, and M970A1).
Step 1.
Check if emergency valve can open. Open valve by operating emergency valve control A
If valve does not open, adjust, repair, or replace emergency valve control and cables
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