TM 5-4610-223-12
Table 4-2. Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
WATER PURIFICATION UNIT-Cont
19. CHEMICAL SLURRY FEEDER SPEED REDUCER RUNS NOISY OR WILL NOT RUN.
Step 1.
Check for lack or improper grade of oil.
Lubricate in accordance with LO 5-4610-223-12.
Step 2.
Check for worn or broken gears.
Replace the speed reducer (para 4-108).
Step 3.
Check for worn or damaged bearings.
Replace the speed reducers (para 4-108).
Step 4.
Check for incorrect alignment.
Realign the speed reducer.
20. DIATOMITE FILTER WILL NOT HOLD PRESSURE.
Step 1.
Check for filter housing or housing cover cracked or warped.
Replace the filter assembly (para 4-76).
Step 2.
Check for defective window glass gaskets.
Replace the gaskets (para 4-76).
Step 3.
Check for defective filter elements.
Replace the filter elements (para 4-76).
Step 4.
Check for defective air release valve or gasket.
Replace the air release valve or gasket (para 4-106).
21. FILTER GAGES SHOW INCORRECT OR NO READING.
Step 1.
Check for clogged filter elements.
Remove and clean the elements (para 4-69).
4-34
