Description of Maintenance Kit

C2, TM 11-6625-564-12

1-8. Description of Maintenance Kit

Common name

Nomenclature

The maintenance kit is composed of two

Cable W5 ----------------------- Cable Assembly, Power,

major components: the test unit and the radio

Electrical, B-ranched

set simulator. Figure 13 shows the two major

CX-10186/ARC-51X

components of the maintenance kit.

Cable W6 ----------------------- Cable Assembly, Special

1-9. Description of Radio Set Simulator

Purpose, Electrical

CX-10187/ARC-51X

The radio set simulator is the smaller of the

Cable W7 ---------------------- Cable Assembly, Special

two major components shown in figure 13. It

Purpose, Electrical

is removable from the transit case and is used

CX-10188/ARC51X

Cable W8 ----------------------- Cable Assembly, Special

in the aircraft in place of the receiver-transmit-

Purpose, Electrical

ter during the in-aircraft troubleshooting pro-

CX-10189/ARC-51X

cedure. All connectors, switches, lamps, op-

Cable W9 ----------------------- Cable Assembly, Special

erating controls, a monitoring meter, and two

Purpose, Electrical

handles are located on the front panel. The

CX-10190/ARC-51X

Cable W10 ------------------------- Cable Assembly, Special

frequency readout mechanism (fig. 23) is

Purpose, Electrical

visible through the front panel.

CX-10191/ARC-51X

1-10. Description of Test Unit

Cable W11 ---------------------- Cable Assembly, Radio

Frequency

The test unit is the larger of the two major

CG-3118/ARC-51X

components shown in figure 13. It can be

Cable W12 ---------------------- Cable Assembly, Radio

u s e d either in or out of the transit case,

Frequency

whichever is more convenient. All connectors,

CG-3119/ARC-51X

Cable W13 ---------------------- Cable Assembly, Radio

switches, lamps, and operating controls are on

Frequency

the front panel. The section of the test unit

CG-3120/ARC-51X

above the indicator lamps is a radio set con-

Control cable adapter ---- Adapter, Connector

trol simulator. This module containing two

U-334/ARC-51X

Frequency selector

Adapter, Connector

handles is removable and can be replaced by

U-335/ARC-51X

cable adapter.

the radio set control when interconnected with

RF cable adapter -------- Adapter, Connector

cable W4.

U-336/ARC-51X

1-11. Description of Minor Components

R a d i o s e t - - - - - - - - - - - - - - - Radio set AN/ARC51X

or AN/ARC51BX

a. Transit Case (fig. 14). Cover, Test Set,

Receiver-transmitter ----- Receiver-Transmitter,

Radio CW710/ARC-51X, the transit case, is

Radio RT-742/ARC-51X

made of molded, reinforced fiberglass with

or RT742/ARC51BX

aluminum framework and hardware. It

Radio set control ---------- Control Radio Set

provides a dustproof, portable enclosure for

C-4677/ARC-51X or

C-6287/ARC-51BX

the equipment, with an air relief valve (not

Receiver preamplifier

Extender, Module

shown) for airborne transportation. The tran-

module extender

MX4906/ARC-51X

sit case is composed of two parts: One half

1st and 2d if. amplifier

Extender, Module

houses the radio set simulator and the test unit.

module extender

MX-4907/ARC-51X

3d if. amplifier module

Extender, Module

Also in this half are eight module extenders,

extender

MX-4908/ARC-51X

an antenna, and an air pump, all mounted

Modulator and audio

Extender, Module

on a removable mounting tray. The other

module extender

MX-4909/ARC-51X

half of the transit case contains a radio set

Specturm generator

Extender, Module

module extender

MX-4910/ARC-51X

simulator mounting tray and a metal antenna

Power amplifier module

Extender, Module

scale, used for adjusting the length of the

extender

MX4911/ARC51X

antenna supplied with the maintenance kit.

guard receiver module

Extender, Module

The dummy load is stored next to the air

extender

MX-4912/ARC-51X

pump in the MK-731/ARC-51X and in the

Power supply module

Extender, Module

extender

MX4913/ARC-51X

radio test set cover in the MK-731A/ARC-

51X. The door on the radio test set cover