Chapter 4. MAINTENANCE INSTRUCTIONS - TM-11-5820-919-120057

TM 11-5820-919-12

CHAPTER 4

MAINTENANCE INSTRUCTIONS

4-1. INTRODUCTION.

4-2. This chapter contains preventive maintenance,

audible tones. Repair includes removal and replacement

troubleshooting, and repair instructions for the radio set.

instructions for the radio set units and accessories. This

Preventive maintenance includes periodic checks and

chapter also includes complete coverage of the battery

services and cleaning. Troubleshooting includes the

pack, because all maintenance is performed at operator

radio set performance test and fault isolation using

and organizational levels.

SECTION I

PREVENTIVE MAINTENANCE

4-3. GENERAL.

b. Wash surface with a cloth or brush

moistened in soapy water.

4-4.

Preventive maintenance is the systematic

inspection and servicing of the radio set to prevent

c. Rinse with a clean cloth moistened in clear

equipment failure, reduce downtime, and assure that the

water.

radio set is serviceable. This section contains daily,

weekly, and quarterly checks and services; cleaning

d. Dry, using a soft lint-free cloth.

instructions and corrosion control instructions.

2. Remove dust and dirt from connectors and pins

4-5. PERIODIC CHECKS AND SERVICES

with a soft bristle brush.

4-6. DAILY CHECKS AND SERVICES. Table 4-1

3. All battery pack maintenance information is

contains the checks and services to be performed on a

contained in section IV.

daily basis.

4-11. CORROSION CONTROL.

4-7. WEEKLY CHECKS AND SERVICES. Table 4-2

contains the checks and services to be performed on a

4-12. The following maintenance actions are performed

weekly basis.

when necessary for prevention and control of corrosion

and fungus on the radio set.

4-8. QUARTERLY CHECKS AND SERVICES.

Quarterly checks and services consist of performing the

1. Separate the three units (receiver/exciter,

radio set performance test contained in figure 4-2. For

amplifier/coupler, and battery pack) from the radio set

Air Force maintenance perform the audible tone

and inspect the exterior of each unit for corrosion and

performance test contained in figure 4-1.

fungus (particularly around the controls, connectors, and

latches).

4-9. CLEANING.

2. Remove all corrosion and fungus with a cloth

4-10. Cleaning of the radio set is to be performed when

and/or brush moistened in cleaning solvent.

necessary, as follows:

3. Repaint all treated areas immediately upon

1. Remove dirt, dust, grease, or other debris from

removal of corrosion to alleviate reoccurrence of

external surfaces as follows:

corrosion build-up.

a. Remove dust and loose dirt with a cloth or

brush.

4-1