TM 5-4610-218-12
Table 4-2.
Troubleshoot ing-Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Check for air leaks on suction side of pump.
Step 2.
Tighten all connections and stop all leaks.
Check for defective impeller key.
Step 3.
Replace the impeller key, paragraph 4-76.
Step 4. Check for a defective impeller.
Replace the impeller, paragraph 4-76.
Step 5. Check for a broken or bent impeller mounting shaft.
Replace the shaft, paragraph 4-76.
10.
DIATOMITE FILTER WILL NOT HOLD PRESSURE.
Check for cracked or warped filter housing or housing cover.
Step 1.
Replace the filter assembly, paragraph 4-73.
Inspect for defective window glass gaskets.
Step 2.
Replace the gaskets, paragraph 4-73.
Inspect for defective filter elements.
Step 3.
Replace the filter elements, paragraph 3-7.
Check for a defective air release valve or gasket.
Step 4.
Replace the air release valve or gasket, paragraph 4-61.
11.
FILTER GAGES SHOW INCORRECT OR NO READING.
Check for clogged filter elements.
Step 1.
Remove and clean the elements, paragraph 3-7.
Check for clogged gage piping.
Step 2.
Clean out the gage piping.
4-49
