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 TM 55-1905-217-34
CAUTION
Disconnect ground cable of battery assembly prior to removal of components.
(1) Remove communications cabinet front panel by unfastening thumbscrews.
(2) Disconnect antenna cable from amplifier connector and at the base of antenna. Remove nut, screw, spacer,
wire cradle and clip. Remove and retain cable and supporting hardware.
(3) Remove antenna, top section and base. Retain antenna assembly.
(4)
Disconnect the two interconnect cables and the bonding jumper from between amplifier and the
receiver/transmitter. Remove and retain cables and jumper.
(5) Disconnect the two cables at amplifier connector and receiver/transmitter connector.
(6) Disconnect the two power cables at terminal block at base of communications cabinet. Remove and return
cables.
NOTE
Record position of cable wires on studs or connectors to assure correct reinstallation of
cables.
(7) Disconnect handset cable at the interconnect box. Remove the speaker unit, be removing attaching screws,
nuts, and washers. Retain speaker and attaching hardware.
(8) Disconnect speaker cable at the interconnect box. Remove and retain handset.
(9) Disconnect cable from interconnect box to receiver/transmitter at the interconnect box. Remove the screws,
nuts, and washers attaching interconnect box to bulkhead. Remove and retain box and attaching hardware.
(10) Disconnect cable from receiver/ transmitter to interconnect box at the receiver/transmitter connector. Remove
and retain cable.
(11) Disconnect ground wire and remove the amplifier AM-3349/GRC-106 from the mounting.
(12) Remove the receiver/transmitter RT-662/GRC from the shelf.
(13) Reinstall the communications cabinet from panel. Connect battery ground cable.
b. Repair. Refer to TM 11-5820-520-12.
c. Installation (fig. 6-4 ). Install components in reverse order of removal. Be certain that proper polarity is observed
in connecting input cables.
Section II. NAVIGATION EQUIPMENT
6-5. Remote Magnetic Heading System
Refer to TB 55-1905-217-34/1 for complete maintenance procedures for the RMHS. (All hulls have similar systems).
6-9
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