CHAPTER 2 INSTALLATION

TM 11-5805-424-15/NAVELEX 0967-220-9010/TO 31W2-2G-41

CHAPTER 2

INSTALLATION

Section I. SERVICE UPON RECEIPT OF EQUIPMENT

(3) Open

the

waterproof,

corrugated

2-1. Unpacking

cardboard, outer carton.

(fig. 2-1)

(4) Remove the spacers and pull out the

a. Packaging Data. When packed for domestic

waterproof, corrugated cardboard, inner carton.

shipment, the MX-73(*)/G and the OA-8072/G are

(5) Open the corrugated cardboard, inner

installed in the MD-674(P)/G. The MD-674(P)/G is

carton and remove the waterproof barrier bags which

placed in a waterproof, corrugated cardboard, inner

contain the spares and the technical manuals.

carton and then inserted in a waterproof, corrugated

(6) Lift the MD-674(P)/G from the waterproof,

cardboard, outer carton. For export shipment, the outer

corrugated cardboard, inner carton.

carton is packed in a wooden case. The wooden case is

17 1/2 inches high, 23 1/2 inches wide, and 28 3/4

2-2. Checking Unpacked Equipment

inches long, and weighs approximately 85 pounds.

a. Inspect the equipment for any loss or damage

b. Unpacking.

For domestic shipment, omit

that might have occurred during shipment. If the

procedures given in (1) and (2) below.

equipment has been damage(d, or is incomplete, refer

(1) Cut and fold back the metal straps.

to procedures given in paragraph 1-3.

CAUTION

b. Check the equipment against the packing list.

c. If the equipment has been used or

Do not attempt to pry off the wooden

reconditioned, check to see if is has been changed by a

cover.

Prying may damage the

modification work order (MWO). If the equipment has

equipment.

been modified, the MWO number will appear on the

(2) Remove the nails from the wooden cover

front panel near the nomenclature.

and remove the wooden cover.

Section II. INSTALLATION

b. Disengage the cable connector at the rear of the

2-3. Installation Procedures

chassis (fig. 1-4).

The MD-674(P)/G may be installed in a standard, 19-

c. Depress the slide release button on each side of

inch relay rack. It requires 12 13/16 inches of vertical

the chassis and pull the chassis out of the case.

rack space. Install the MD-674(P)/G in a relay rack as

d. Position the case in the relay rack and secure

follows:

the case to the relay rack with a panel bolt in each

CAUTION

retaining slot of the mounting flange (fig. 1-1).

e. Position the chassis in the case and slide it back

Do not install the MD-674(P)/G

until the slide stops engage.

directly above, below, or adjacent to

equipment which generates exces-

CAUTION

sive heat.

Excessive heat will

A radio frequency interference (rfi)

damage the transistors.

gasket is used in the front panel to

a. Unscrew the screws that secure the front panel

prevent signal

to the outer case, and slide the chassis forward until the

slide stops are reached.

Change 2 2-1