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 TM 55-1905-219-14-8
4-5. GENERAL (Continued).
Table 4-16. Macerator Pump - Troubleshooting (Continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. Pump is noisy with high pitched sining noise.
Listen while pump is operated.
a. The impeller in grinder unit may not be properly adjusted causing impeller to rub
against cutter Ring.
b. Noise may be caused by defective ball bearing. If grinder unit is free and noise
still persists check bearing in motor.
4-62
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