Chapter 2. INSTALLATION - TM-11-5821-277-200017

TM 11-5821-227-20

CHAPTER

INSTALLATION

packaging and the transceiver is enclosed in a double

2 - 1 . General

cardboard carton. The three individual cartons are

Since the radio set is normally installed in an aircraft

then placed in a cardboard box which is thoroughly

by the manufacturer of the aircraft, or during a

sealed with paper tape. The box is then sealed inside

retrofit program, limited installation information is

a moistureproof barrier which, in turn, is placed in

and outer fiberboard box sealed with canvas tape.

provided in this chapter.

The radio set is shipped with all pluckout items

2-2 Siting Requirements

installed.

The control unit is normally mounted in the cockpit

2-4. Unpacking Instructions

of the aircraft. The minimum space requirements for

CAUTION

the control unit are shown in A, figure 2-1. The

Do not use a heavy instrument, such as a

mounting is normally installed in the electronics bay

crowbar, to pry or dig during unpacking. Be

of the aircraft and the transceiver installed in the

extremely careful to avoid damage to finish

mounting (fig. 1-6). The minimum space require-

ments for the transceiver are shown in B, figure 2-1.

or components.

Be careful while unpacking to avoid rough handling

The minimum space requirements for the mounting

that can damage the equipment or disturb the

(including the mounting hole arrangement) are

adjustments. Follow the procedures listed below to

shown in C, figure 2-1. These illustrations are

avoid damage.

finished primarily for planning purposes only.

a. Maintain the carton in an upright position.

Sufficient space is required at the rear of the control

b. Carefully cut the tape that seals the outer

u n i t for the aircraft wiring harness and the

carton.

associated plug which mates with J1 at the rear of

the equipment. Also, adequate space must be

c. Cut the moistureproof barrier and tear it open.

d. Carefully cut the tape that seals the inner box.

provided to perform operating procedures and for

e. Remove the individual cartons one at a time.

removing the control unit from its mounting when

f. Carefully open each carton and remove the radio

necessary. When planning installation of the mount-

set components.

ing, consideration should be given to provisions for

adequate space for making connections to aircraft

2-5. Checking Unpacked Equipment

wiring at the rear of the unit, and for removing the

a. Inspect the equipment for damage that may

transceiver from the front of the mounting.

have occurred during shipment. If the equipment

2-3. Packaging Data

has been damaged, fill out and forward DD Form 6

(fig. 2-2)

(para 1-3b).

b. Check to see that the equipment is complete as

The three components of the radio set are shipped in

listed on the packing slip. Report all discrepancies in

a cardboard container, 18 by 16 by 16 inches, with a

accordance with TM 38-750. The equipment should

volume of 2.08 cubic feet. The shipping weight is

be placed in service even though a minor assembly or

approximately 30 pounds. Each of the three compo-

part, that does not affect proper functioning, is

nents is placed in individual cardboard cartons. The

missing.

control unit is placed in a plastic bag before

2-1

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