CHAPTER 3. OPERATORS MAINTENANCE INSTRUCTIONS

55-4920-430-13

CHAPTER

O P E R A T O R S MAINTENANCE INSTRUCTIONS

3-1. General.

This chapter provides maintenance procedures authorized for the operator. Except for the procedures

covered in this chapter, no special maintenance instructions are required. Repair at this level is limited

to lamp and lens replacement and cable replacement or repair.

3-2. Servicing.

a. There are no servicing requirements except for those procedures identified in the preventive

maintenance checks and services chart (para 2-8).

b. The following special tool is required to perform operator's maintenance on the test set: Crimping

tool assembly NSN 5120-00-075-2544.

3-3. Cleaning.

a. Inspect the exterior of the equipment. The exterior surface should be face of dust, dirt, grease, and

fungus. Remove dust and loose dirt with a clean soft cloth.

Dry cleaning solvent, type I is combustible and toxic. It can irritate skin

and cause burns. Use only with adequate ventilation, away from open

flame. In case of contact, immediately flush skin or eyes with water for

at least 15 minutes. Get medical attention for eyes.

b. Remove grease, fungus, and ground-in dirt from the equipment using a cloth damp with solvent.

c. Clean the front panel, AC/DC VOLTMETER lens, and control knobs and switches: use a clean,

soft cloth. If necessary, dampen the cloth (item 2, table 3-1) with water, Use mild soap (item 3, table 3-

1 ) for more effective cleaning.

3-4. Touch-Up Painting.

a. Case or Cover. Refer to applicable cleaning and refinishing practices in TM 43-0139.

( 1 ) Finish.

(a) Remove corrosion from case or cover by sanding with abrasive cloth. (Item 4, table 3-1.)

Naphtha is combustible and toxic. It can irritate skin and cause burns.

Use only with adequate ventilation, away from open flame. In case of

contact, immediately flush skin or eyes with water for at least 15

minutes. Get medical attention for eyes.

(b) Clean sanded surface using naphtha. (Item 5, table 3-1,)

(d) Apply light gray enamel (item 6, table 3-1) to areas with epoxy coating.

( 2 ) Marking.

3-1