Repair Electrical Horn.

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FIGURE 2-35. Electrical Horn Replace.

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

FIGURE 2-36. Electrical Horn Repair.

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

2-44.

Repair Electrical Horn.

This task covers:

a. Disassembly, b. Repair, c. Assembly.

INITIAL SETUP

Tools

Equipment Condition

Tool kit, general mechanic's,

Electrical power supply turned OFF,

at emergency power panel EL-102

T o o l kit, e l e c t r i c i a n ' s ,

and switch tagged "Out of Service -

Do Not Operate."

Materials/Parts

Gasket P/N PT121-1

Heater driver diaphragm PT 120-1

Warning tags, Item 1, Appendix C

REMOVAL

Remove hexagon head cap screws (2), flat washers (3), and self-locking

hexagon nuts (4) holding access cover (1) in place.

Remove access cover.

Tag and disconnect electrical leads to heater driver diaphragm (5).

Remove hexagon head cap screws, flat washers, and self-locking nuts (7).

Remove heater drive diaphragm (5).

Remove gasket (6).

REPAIR

Repair is by replacement of heater driver diaphragm (5) and gasket (6).

REPLACEMENT

Install gasket (6).

Attach heater driver diaphragm (5) to horn with hexagon head cap screws flat

washers and self-locking hexagon nuts (7).

Remove tag and connect electrical leads to heater driver diaphragm (5).

Change 1

2-272