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 TM 55-1905-223-24-18-1
Table 2-2.
Troubleshooting - CONT
Malfunction
Test or Inspection
Corrective Action
BILGE/BALLAST AND FIREMAN PIPING SYSTEM
217.
Low discharge pressure.
STEP 1. Check for partially closed suction valve.
Ensure suction valve is fully open.
STEP 2. Check for open suction valve to empty bilge well.
Align all suction valves on bilge manifold.
STEP 3. Check for partially closed discharge valve.
Ensure discharge valve is fully open.
STEP 4. Check for dirty or clogged suction strainers.
Clean or replace strainers.
STEP 5. Check for sticking valves.
Refer to POTABLE WATER SYSTEM troubleshooting, Malfunction 216, Step 6.
STEP 6. Check for leaking valves.
Refer to POTABLE WATER SYSTEM troubleshooting, Malfunction 216, Step 8.
STEP 7.
Check for leaking flange joints or loose flange connections.
NOTE
It is best to tighten the joints while under pressure so
that leak stoppage can be observed.
a. Inspect and tighten connection.
b. If uniform tightening does not stop the leak.
C. Isolate the joint and release line pressure.
d. Check for leaking pipe fitting. Locate leak, isolate repair or replace
f i t t i n g (para. 2-320).
e. Restore seating surfaces by polishing with crocus cloth.
f . Install a new gasket and tighten bolts uniformly.
g. If leakage continues, repair valve.
STEP 8. Check for piping failure.
Locate leak, isolate repair or replace affected piping (para. 2-320).
STEP 9. Check for leaking pipe fitting.
Locate leak, isolate repair or replace fitting (para. 2-320).
2-164
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