DIRECT SUPPORT MAINTENANCE
FIREFIGHTING, FIRE ALARM, AND FIRE SUPPRESSION SYSTEMS FOR
INLAND AND COASTAL LARGE TUG (LT)
DIESEL ENGINE-DRIVEN FIREFIGHTING PUMP, REPLACE
Tools and Special Tools:
Two Watercraft Engineers, 88L
Tool Kit, General Mechanic's (Item 1, Table 2,
Chain Hoist (Item 12, Table 2, WP 0046 00)
Sling, Endless, 1" x 6' (Item 13, Table 2,
Suitable Drain Pan
Tag, Danger (Item 8, Table 1, WP 0050 00)
Tape, Antiseizing (Item 9, Table 1, WP 0050 00)
Pump, Centrifugal (Item 1, Figure 6,
Gasket (Qty. 2) (Item 17, Figure 6,
CLOSE valves CA-6, STG AIR TO PMP DR ENG,
FM-1, SEA SUCT, F.F. PMP., and FM-13, F.F. TO
F.M. CRSVR. Lock out and tag out (FM 55-502).
Never reuse locking hardware. Reuse of locking hardware such as lockwashers,
locking nuts, cotter pins, and lockwire can result in undetected loosening of fas-
tening hardware causing catastrophic component failure resulting in death, in-
jury, or damage to equipment. In accordance with TB 43-0218, ensure that all
locking hardware is discarded upon removal and replaced with new.
DIESEL ENGINE-DRIVEN FIREFIGHTING PUMP REPLACEMENT
1. Place a suitable drain pan under the firefighting pump (figure 1, item 1).
The seacock for the affected system must be CLOSED before beginning replace-
ment of any raw water system piping, hoses or valves and/or valves. Failure to
observe this warning can result in flooding of the space, resulting in injury or
death to personnel and damage to the vessel.
2. Remove the four bolts (figure 1, item 2), four nuts (figure 1, item 3), four flat washers (figure 1, item 4), and
four lockwashers (figure 1, item 5) that secure the shaft guard (figure 1, item 6). Remove the shaft guard,
and discard the lockwashers.