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TM 55-1905-223-24-12
3-14. Replace Centrifugal Pump Unit. (FIGURE 3-3)
This task covers: a. Removal, b. Replacement.
Equipment Condition
Tool kit, general mechanic's,
TM 55-1905-223- 1 0, electric power to
pump motor disconnected, tagged
Tool set, measuring machinist's,
of Service, Do not Operate."
Suction and discharge valves locked,
Lifting sling P/N 3375957
tagged in Closed position.
General Safety Instructions
Pump/motor assembly PN Series 2000
Disconnect power. Use the lifting sling.
Gasket material, Item 1, Appendix C
Lubricating grease, item l7,Appendix C
Wiping rags, Item 5, Appendix C
Out of Service tags, Item 13, Appendix C
Electrical components contain high voltages that can cause severe injury or
death. Before servicing, adjusting, or replacing electrical or mechanical compo-
nents, the power supply to the electric motor must be disconnected.
a. Open discharge gauge tap(10),rernove casing drain plug(12)and drain pump, install drain plug.
b. From electric motor conduit box (1) remove cover machine bolts (2), cover, and gasket. Disconnect and
tag electric cables from motor.
From pump suction (1) and discharge (9) piping flanges remove hexagon nuts (5), hexagon machine
bolts (7), lockwashers (6), and gaskets (8).
d. Using the lifting sling, spring back and secure suction and discharge piping enough to provide clearance
between piping and pump flanges.
e. Using the lifting sling, rig pump/motor assembly for removal.
Change 2


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