TM 55-1925-284-14&P
DIRECT SUPPORT MAINTENANCE
MARINE SANITATION DEVICE FOR
INLAND AND COASTAL LARGE TUG (LT)
WET WELL, REPAIR
INITIAL SETUP:
Tools and Special Tools:
References:
Tool Kit, General Mechanic's (Item 1, Table 2,
FM 55-502
Materials/Parts:
Gloves, Chemical and Oil Protective (Item 1,
Goggles, Industrial (Item 2, Table 3,
Equipment Conditions:
Set to OFF the MSD DISCHARGE PUMP AND
BLOWER circuit breaker in 440V power panel
No. 4. Lock out and tag out (FM 55-502).
CLOSE valves SD-1 SEWAGE INLET TO MSD and
MSD-6 BLOWER DISCH TO AIR SCOURING
Personnel Required:
SOV. Lock out and tag out (FM 55-502).
Two Watercraft Engineers, 88L
FLOAT SWITCH REPLACEMENT
DISASSEMBLY
1. Remove the two screws (figure 1, item 1) securing the cover (figure 1, item 2) to the junction box (figure 1,
item 3). Remove the cover.
WARNING
Replace or repair components only after the affected circuit has been secured,
locked out, and tagged out. Performing replacement with the circuit energized
may result in injury.
2. Use a multimeter to check for available voltage at the wiring (figure 1, item 4). If voltage is present, verify that
the proper circuit breaker is secured, locked out, and tagged out (FM 55-502). If no voltage is present,
continue with the procedure.
3. Label, disconnect, and remove the wiring (figure 1, item 4) from the junction box (figure 1, item 3).
0030 00-1