Section II. ORGANIZATIONAL MAINTENANCE

TM 11-5820-509-12

c. Clean the panel, meter, and control knobs; use a soft,

cloth with water; mild soap may be used for more effective

clean cloth. If necessary, dampen the

cleaning. Wipe dry with a lint-free cloth.

Section II. ORGANIZATIONAL MAINTENANCE

maximum operating capability. Preventive maintenance

4-7. Scope of Organizational

is the responsibility of all maintenance categories

Maintenance

concerned with the equipment and includes the

The maintenance duties assigned to the organizational

inspection, testing, and repair or replacement of parts,

repairman of the radio set are listed below, together with a

subassemblies, or assemblies that inspection and tests

reference to the paragraphs covering the specific

indicate would probably fail before the next scheduled

maintenance functions.

periodic service. Preventive maintenance checks and

Weekly preventive maintenance checks and

services of the radio set at organizational category are

services 1 para 4-11 ).

made weekly and quarterly unless otherwise directed by

b. Quarterly preventive maintenance checks and

the commanding officer.

services (para 4-13).

b. Maintenance forms and records to be used and

c. Touchup painting instruction (para 4-14).

maintained on this equipment are specified in TM 38-750.

d. Organizational troubleshooting (para 4-16).

4-10. Weekly Maintenance

4-8. Test Equipment, Tools, and Material

Weekly preventive maintenance checks and services on

Required

the radio set are required. Periodic daily services

The test equipment, tools, and technical manuals for the

constitute a part of the weekly preventive maintenance

organizational repairman are listed below.

checks and services and must be performed concurrently.

a. Tool Kit, Radio Repair TK-101/G.

All deficiencies or shortcomings will be recorded in

b. Multimeter AN/URM-105 (TM 11-6625-203-12).

accordance with the requirements of TM 38-750. Perform

c. Fine sandpaper.

all the checks and services listed in the weekly preventive

4-9. Organizational Maintenance

maintenance checks and services chart (para 4-11) in the

a. Preventive maintenance is the systematic care,

sequence listed.

inspection, and servicing of equipment to maintain it in

serviceable condition, prevent breakdowns , and assure

4-11. Weekly Preventive Maintenance Checks and Services Chart

Sequence

Item to be inspected

Procedures

Paragraph

No.

references

External hardware...............................See that external hardware is properly tightened.

None.

Controls and switches .........................While making operating checks, (sequence No. 3 and 4),

None.

observe that mechanical action of each control and switch

is smooth and free from binding.

Preliminary ......................................... Repeat paragraph 3-4 except for e.

None.

Receiver transmitter performance. a. Set POWER/LIGHTS switch (fig. 3-1; to ON/LO; ob

(Para 4-16).

performance serve that panel lamps are dim. Set POWER/LIGHTS

switch to ON/HI; observe that panel lamps are brighter.

b. Set POWER/LIGHTS switch to ON/LO and press

(Para 2-9).

BATTERY TEST pushbutton The XMTR OUTPUT

meter indicates in white area.

c. Observe that receiver output is obtained in handset.

(Para 4-16).

d. Set XMTR PWR switch to LO, press handset push-to-

(Para 4- 16).

talk switch and speak in a normal voice into handset

microphone. Observe that sidetone is heard in handset

earphone.

e. Set XMTR PWR switch to OFF and set

N/A.

POWER/LIGHTS switch to OFF/OFF.

4-12. Quarterly Maintenance

Quarterly preventive maintenance checks and services on

concurrently. All deficiencies or shortcomings will be

the radio set are required. Periodic daily and weekly

recorded in accordance with the requirements of TM 38-

services constitute a part of the quarterly preventive

750. Perform all the checks and services listed in the

maintenance checks and services and must be performed

4-2