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TM 55-1905-223-24-12
3-13. Replace Auxiliary Fire Pump Assembly. (FIGURES 3-1 and 3-2)
This task covers: a. Removal, b. Replacement.
Equipment Condition
Tool kit, general mechanic's,
TM 55-1905-223-10, bowthruster diesel
engine shut down, tagged "Out of
Lifting sling P/N 3375957
Service, Do not Operate."
Suction and discharge valves locked and
tagged in "Closed" position.
Pump assembly P/N 4-AD-18.5
General Safety Instructions
Casket material, Item 1, Appendix C
Cleaning solvent, Item 2, Appendix C
Use the lifting sling.
Lubricating grease, Item 3,
Out of Service tags, Item 13,
Space bar, .125 inch, Item 12,
a. Remove mounting hardware from guard. Remove guard.
b. Remove flexible shaft coupling cover bolts (8, FIGURE 3-1) and nuts (7);
remove two each cover halves (9) and gasket (6).
To remove grid (2), insert a round rod or screwdriver into grid open loop
ends. Pry the grid out. Hubs are now separated.
d. Remove from pump suction and discharge piping flanges (FIGURE 3-2) hexagon
nuts (6), hexagon machine bolts (3), lock washers (5), and gasket (2).
e. Using the lifting sling, swing back and secure suction and discharge
piping enough to provide clearance between piping and pump flanges.
Remove from pump foundation (4) self locking nuts (7), machine bolts (8),
bevel washers ( )and resilient mounts (Detail A).
g. Using the lifting sling, remove auxiliary fire pump assembly from


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