TM 55-1925-282-14&P
UNIT MAINTENANCE
REVERSE OSMOSIS WATER PURIFICATION UNIT FOR
INLAND AND COASTAL LARGE TUG (LT)
MEDIA FILTER SUBASSEMBLY, REPAIR
INITIAL SETUP:
References:
Tools and Special Tools:
FM 55-502
Tool Kit, General Mechanic's (Item 1, Table 2,
TB 43-0218
Torque Wrench, 0-600 IN-LB (Item 7, Table 2,
Suitable Drain Pan
Materials/Parts:
Equipment Conditions:
Compound, Antiseize (Item 4, Table 1,
Reverse Osmosis Water Purification Unit (ROWPU)
CLOSE, lock out, and tag out (FM 55-502) valve
RO-V-1 Main Sea Water Supply Valve.
Valve Rebuild Kit, 3/4" Sil Braze (Figure 1,
Set to OFF, lock out, and tag out (FM 55-502) circuit
breakers REVERSE OSMOSIS WATER MAKER
Valve Rebuild Kit, 1" Sil Braze (Figure 1,
No. 1, and REVERSE OSMOSIS WATER
MAKER No. 2 at 440V power panel No. 5.
Personnel Required:
Two Watercraft Engineers, 88L
WARNING
Never reuse locking hardware. Reuse of locking hardware such as lockwashers,
locking nuts, cotter pins, and lock wire can result in undetected loosening of
fastening hardware causing catastrophic component failure resulting in death,
injury, or damage to equipment. In accordance with TB 43-0218, ensure that all
locking hardware is discarded upon removal and replaced with new.
REPAIR SIL BRAZE BALL VALVE
DISASSEMBLY
1. Cycle the affected valve handle (figure 1, item 1) to drain any fluid, and remove any pressure from the valve
body cavity.
2. Unscrew and remove the three sets of nuts (figure 1, item 2) and lockwashers (figure 1, item 3) from the bolts
(figure 1, item 4). Discard the lockwashers (figure 1, item 3).
3. Pull the end fittings (figure 1, item 5) free of the valve body (figure 1, item 6).
4. Remove the gaskets (figure 1, item 7) and seats (figure 1, item 8) from the end fittings (figure 1, item 5).
Discard the gaskets.
5. Remove the cavity filler (figure 1, item 9) from the ball (figure 1, item 10), and discard.
0020 00-1