Replace/Repair Welded Valves.

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TM-55-1905-223-24-18-2 Landing Craft Utility (LCU) NSN 1905-01-154-1191 Basic Craft Part II Manual

FIGURE 3-212. Repair Welded Valves (Typical)

TM 55-1905-223-24-18-2

MAINTENANCE OF PIPING SYSTEM, FRESH WATER COOLING

3-228. Replace/Repair Welded Valves. (Figure 3-212).

This task covers:

a. Removal

Repair.

Replacement.

INITIAL SETUP:

Tools

Equipment Condition

Tool kit, general mechanic's.

Stop the fresh water cooling pump

at the Auxiliary Machinery Motor

Torch outfit, cutting and welding

Control Center and set circuit

medium duty, oxygen and

breaker P205-4 to the OFF position.

Tag switches "Out of Service - Do Not

Tool kit, welder, 5180-00-754-0661

Operate."

Materials/Parts

Piping system, Fresh water

cooling P/N 8532027, refer

to TM 55-1905-223-24P

Warning tags, Item 1, Appendix C

Utility pail, Item 13, Appendix C

REMOVAL

WARNING

Ensure system is turned OFF and tagged to prevent operation

during maintenance. Generated pressure could cause injury.

NOTE

All welded type valves are replaced in the same manner.

a. Isolate valve from system.

(1) Trace inlet piping (2) to nearest isolation valve.

(2) Close isolation valve (1).

3-703