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 TM 55-1905-223-24-12
Section IV. UNIT MAINTENANCE TROUBLESHOOTING
2-11. Troubleshooting. Both a symptom index and a troubleshooting table are provided. The symptom
index will help you locate the information you need for troubleshooting.
SYMPTOM INDEX
Troubleshooting
Procedure
AUXILIARY FIRE PUMP ASSEMBLY
Liquid not being pumped
Item 6
Overload on driver
Item 8
Pump loses prime after starting
Item 7
Pump noisy or vibrates
Item 9
CENTRIFUGAL PUMP UNIT
Liquid not being pumped
Item 1
Not enough liquid delivered
Item 2
Not enough pressure
Item 3
Pump operates for short time, then stops
Item 4
Pump takes too much power
Item 5
Table 2-2 lists the common fault conditions that may be found during operation or maintenance of the
equipment. Look for causes and do corrective actions in the order listed. This manual cannot list every
symptom that may show up, and it cannot list all the possible causes and corrective actions. If a symptom is
not listed, or if it keeps up after you have performed the corrective actions, notify your supervisor.
2-5
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