Replace Bearing Repeater

TM 55-1905-223-24-14

2-20. Replace Bearing Repeater. (FIGURES 2-12 and 2-13)

This task covers: a. Removal, b. Replacement.

INITIAL SETUP

Tools

General Instructions

Tool kit, general mechanic's,

There are three bearing repeaters: (1)

port bridge wing, (2) starboard bridge

Tool kit, electrician's,

wing and (3) top of pilothouse. Trans-

mission power to each bearing repeater

is controlled by switches in relay

Materials/Parts

transmitter. These switches are labeled

S1 (port bridge wing), S5 (starboard

Bearing repeater, P/N 1976158-3

bridge wing), and S7 (top of pilot-

Thread compound, (Appendix C, Item 3)

house).

Warning tags, Appendix C, Item 8

REMOVAL

a. On relay, transmitter (1, FIGURE 2-12), loosen four retaining clips (2) and open cabinet cover (3).

WARNING

Ship's ac power is present at FUSE F1 and POWER switch S1 terminals on the inside of the cabinet

cover. THESE VOLTAGES ARE DANGEROUS. Use extreme care when working inside of cabinet.

b. On A2 circuit card assembly (4) set appropriate repeater switch (5) to the down position and close cover (3).

Secure four retaining clips (2).

c.

Tag relay transmitter to indicator bearing repeater Out of Service.

d. On appropriate pelorus stand (4, FIGURE 2-13) loosen two pivot nuts (12) pivot screws (11) on support plate (3).

e. Rotate bearing repeater (2) on pivot screws to BOTTOM VIEW position. Secure pivot nuts (12), holding bearing

repeater (2-) in this position.

f.

Remove eight screws (6), lockwashers (7), and flat washers (8) from cover (9).

2-47