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TM 55-1905-223-24-12
2-23. Service Centrifugal Pump.
This task covers:
a. Inspection,
b. Service,
c. Adjustment.
Equipment Condition
Tool kit, general mechanic's,
TM 55-1905-223-10
Secure centrifugal pump unit.
Torque wrench set (30-300 foot-pounds)
Shims, Item 18, Appendix C
a. Check for loose or missing mounting bolts (3, FIGURE 2-2).
b. Operate pump unit (TM 55-1905-223-10) and check for leaks, unusual noises, and vibration.
c. Shut down pump unit (TM 55-1905-223-10).
d. Check pump and piping alignment.
Close pump suction valves (9 and 10) and discharge valve (7).
Separate suction piping flange (8) by removing (11, 12, and 13) and observe piping to see if it
springs away from pump, indicating misalignment.
Disconnect discharge piping flange (4), remove mounting hardware and observe to see if piping
springs away from pump, indicating misalignment.
Connect suction and discharge piping by replacing mounting hardware.
Open suction and discharge valves.
Refer to Table 2-1 for centrifugal pump service.


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