Section V. UNIT TROUBLESHOOTING PROCEDURES
Common malfunctions which you may find during operation or maintenance of the centrifugal pump or
its components are listed in Table 3-4 that follows. You should perform the test inspections and correc-
tive actions in the order they appear.
In general, engine exhaust is an excellent way to tell what kind of condition your centrifugal pump is in.
Exhaust color of black, or bluish-white, smoke is normal before the engine warms up fully. As the en-
gine reaches normal operating temperature, the exhaust becomes clear or light blue, provided there
are no problems. if the exhaust does not clear up, a problem is indicated.
When exhaust color is abnormal, turn off the engine immediately and notify your supervisor. Use the
following chart as a guideline to exhaust symptoms.
Table 3-3. Troubleshooting by Exhaust Color
Clear or light bluish condition
Continuous black smoke
Seizure of moving part
Continuous bluish-white smoke
Lubricating oil is being consumed
This manual cannot list all malfunctions that may occur, nor all tests and corrective actions. If you find a
malfunction not listed, or listed incorrectly, notify your supervisor.
Before using this table, be sure all applicable Operator and Unit PMCS
have been performed.
Table 3-4. Unit Troubleshooting
TEST OR INSPECTION
1. STARTING HANDLE FAILS TO PULL
Check decompression lever.
Push decompression lever down to release engine compression.
[Refer to para 2-9(5).]
Notify Direct Support Maintenance.