Section III. PREVENTIVE MAINTENANCE CHECKS AND SERVICES

TM 11-5820-489-20

TO 31R4-2GRA6-32

Section Ill.

PREVENTIVE MAINTENANCE CHECKS AND SERVICES

2-6. GENERAL

The following information is for QUARTERLY PMCS (Preventive Maintenance Checks and Ser-

vices) of any AN/GRA-6. This should be performed after 90 eight-hour days of operation. Maintenance

forms and records used and maintained on this equipment are specified in TM 38-750. Perform all

checks and services in sequence as listed in TABLE 2-1.

TOOLS AND MATERIAL

q Tool Kit, Electronic Equipment TK101/G (SC 5180-91-CL-R13).

q Cleaning compound

q Cleaning cloth

2-7. ROUTINE SERVICES

Routine services are a series of checks and services performed by organizational maintenance.

These services are not listed in the QUARTERLY PMCS TABLE in order to separate the nonopera-

tional from the operational services, Organizational maintenance personnel are not required to

perform operator ROUTINE SERVICES.

Perform the following as necessary:

q Clean

q Dust

q Wash

q Check

for frayed or cut cables

q Check

for dented, bent, or broken components

q Check

for rusting

q Check

controls for smooth operation

q Check

for loose nuts, bolts, and connectors

q Check

ground connections

q Check

for completeness of equipment

q Cover

unused receptacles

Service the following items:

q Chassis

q Battery compartment

q Jacks

q Gaskets

NOTE

If you find any damage during ROUTINE SERVICES refer to paragraph 2-10 (TROUBLESHOOTING

TABLE) or Section V (MAINTENANCE PROCEDURES) in this manual for instructions on how to

correct it. If the instructions are not there, notify your supervisor. A higher category of maintenance

may be required.

2-6