Chapter 3. MAINTENANCE INSTRUCTIONS - TM-11-5826-258-240023

TM 11-5826-258-24

CHAPTER 3

MAINTENANCE INSTRUCTIONS

NOTE

Tools and equipment required for maintenance of the AN/ARM-123(V)(*) are specified in ap-

pendix B.

Section I. REPAINTING AND REFINISHING

3-1. Original Protective Finish

3-2. Retouching/Repainting

The outside surfaces of the receiver and control (with

After cleaning (para 3-8), remove corrosion from

metal surfaces by lightly sanding them with fine sand-

the exception of the light panel) are treated in ac-

paper. Brush two thin coats of paint on the bare metal

cordance with MIL-F-14072A and a final film of

to protect it from further corrosion. Refer to TB

black lusterless enamel No. 37038. Unpainted internal

surfaces and functional parts are chemically

43-0118, Field Instructions for Painting and Pre-

serving Electronics Command Equipment Including

passivated.

Camouflage Pattern Painting of Electrical Equipment

Shelters,

Section II. PREVENTIVE MAINTENANCE CHECKS AND SERVICES

izational electronic equipment repair technician or

3 - 3 . General

crew chief, higher category of maintenance is

The preventive maintenance checks and services are

required. Records and reports of these checks and serv-

defined herein for specific intervals. These checks and

ices must be made in accordance with the require-

services will maintain Army electronic equipment in

ments set forth in TM 38-750.

Serviceable condition; that is, in good general (phys-

ical) condition and in good operating condition. To as-

3-4. Flight Line Preventive Maintenance

sist the organizational electronic equipment repair

Perform the preventive maintenance functions un-

technician or crew chief in maintaining combat

dicated in table 3-1 every 25 hours of flying time (con-

serviceability, the table indicates what to check and

currently with the aircraft intermediate maintenance

the normal conditions. The references list the para-

checks and services).

graphs or manuals that contain supplementary infor-

mation. If the defect cannot be remedied by the organ-

Table 3-1. Flight Line Preventive Maintenance Checks and Services

Total taskhours required: 1.24

Work

ITEM TO BE INSPECTED

Sequence

Time

PROCEDURE

No.

(T/H)

SECTION I POWER OFF

Taskhours required

EXTERIOR SURFACES

.08

Clean the receiver and control unit front panel in accordance with paragraph 3-8.

Check for broken glass on the control unit. Refer to higher category maintenance for repair.

Check all exposed metal surfaces for rust and corrosion. Retouch in accordance with paragraph 3-2.

.08

EXTERIOR ITEMS

Check safety wiring on the mount fasteners. REFER to TM 55-1500-323-25.

Check the action of all mechanical knobs and switch to verify smooth and free operation

Tighten any loose mounting screws

SECTION II -- POWER ON

Taskhours required:

.08

PANEL LAMPS

Check to see that control unit panel lamps illuminate when the aircraft dimmer control is rotated.

3-1