TM 55-1925-284-14&P
UNIT MAINTENANCE
MARINE SANITATION DEVICE FOR
INLAND AND COASTAL LARGE TUG (LT)
PUMP ASSEMBLY, REPLACE
INITIAL SETUP:
References:
Tools and Special Tools:
FM 55-502
Tool Kit, General Mechanic's (Item 1, Table 2,
TB 43-0218
TM 55-1925-273-10
Tool Kit, Electrician's (Item 2, Table 2,
Multimeter (Item 4, Table 2, WP 0035 00)
Materials/Parts:
Gloves, Chemical and Oil Protective (Item 1,
Table 3, WP 0038 00)
Equipment Conditions:
Goggles, Industrial (Item 2, Table 3,
All ventilation systems operating normally (TM 55-
1925-273-10).
Tag, Danger (Item 7, Table 1, WP 0039 00)
Set to OFF the MSD DISCHARGE PUMP AND
Tape, Antiseizing (Item 8, Table 1, WP 0039 00)
BLOWER circuit breaker in 440V power panel
Pump, Centrifugal (Item 1, Figure 5,
No. 4. Lock out and tag out (FM 55-502).
CLOSE, lock out, and tag out (FM 55-502) valves
MSD-8, MEDIA TANK PUMP-OUT DR; MSD-
Personnel Required:
10, WET WELL DISCHARGE; and SD-12, MSD
Two Watercraft Engineers, 88L
OVERBOARD DISCH PMP DISCH.
WARNING
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.
DISCHARGE PUMP AND MOTOR ASSEMBLY REPLACEMENT
REMOVAL
1. Remove the four screws (figure 1, item 1) and remove the junction box cover (figure 1, item 2) from the
junction box (figure 1, item 3).
0025 00-1
