Repair Butterfly Valves. - TM-55-1905-223-24-18-11077

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FIGURE 2-261. Torque Sequence Diagram (Typical).

TM-55-1905-223-24-18-1 Landing Craft Utility (LCU) NSN 1905-01-154-1191 Basic Craft Part 1 Manual

FIGURE 2-262. Repair Butterfly Valves (Typical).

TM 55-1905-223-24-18-1

Repair Butterfly Valves.

a. Removal, b. Repair, c. Replacement.

This task covers:

Tools

At Ship Service Switchboard set

Tool kit, general mechanic's,

BILGE/BALLAST circuit breaker to the

OFF position. Set FIRE PUMP 1 and

FIRE PUMP 2 circuit breakers to the

Materials/Parts

OFF position. Tag switches "Out of

Service - Do Not Operate."

Piping system, bilge ballast and

firemain P/N 88529024, refer to

TM 55-1905-223-24P

Warning tags, Item 1, Appendix C

U t i l i t y p a i l , Item 13, Appendix C

Use extreme care when disconnecting. Escaping system

pressure of fluid could cause injury.

NOTE

All butterfly valves are replaced in the same manner.

Isolate valve from piping system.

(1) Trace inlet piping (1, FIGURE 2-262) to nearest manually operated shutoff

valve.

( 2 ) Close shutoff valve.

(3) Trace outlet piping (4) to nearest manually operated shutoff valve.

( 4 ) Close shutoff valve.

2-989