Repair Screen Assembly. (FIGURE 2-9)

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REPLACEMENT

TM-55-1905-223-24-11 Marine Sanitation System for Landing Craft Utility (LCU) NSN 1905-01-154-1191 Manual

Figure 2-9. Screen Assembly (Inside Treatment Tank).

TM 55-1905-223-24-11

2-14. Repair Screen Assembly. (FIGURE 2-9)

This task covers:

a. Removal

b. Replacement.

INITIAL SETUP:

Tools

Equipment Condition

Tool kit, general mechanic's,

System flushed with water

Electrical power OFF and tagged to

the unit

Materials/Parts

External sewage inlet and outlet

valves closed

Disinfectant, Item 3, Appendix C

Backwash water supply valve closed

Screen assembly P/N 3500044

Grommet fasteners P/N

Bleach metering valve closed

3500-43-001

Rivets P/N 3500043-002

Wire fabric P/N 3500044

Warning tag, Item 10, Appendix C

WARNING

Toxic and flammable vapors are generated in the sewage system. Provide

ventilation from outside source before removing treatment tank covers. Avoid

open flames and prolonged breathing of fumes.

REMOVAL

a. Remove the treatment tank cover and gasket (paragraph 2-11).

b. Remove the 12 nylon rivet and grommet fasteners that hold the wire fabric in place (2, 3, FIGURE 2-9).

Cut the fasteners if necessary. Discard the old grommets and rivets.

c. Remove the wire fabric screen (1).

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