CHAPTER 3. MAINTENANCE INSTRUCTIONS - TM-11-6625-409-120024

TM 11-6625-409-12

CHAPTER 3

MAINTENANCE INSTRUCTIONS

a. Systematic Care. The procedures given in

3-1.

Scope of Maintenance

paragraphs 3-4 through 3-11 cover routine systematic

care essential to proper upkeep and operation of the

NOTE

equipment.

The operator will perform organizational maintenance

b. Preventive Maintenance Checks and Services.

The maintenance duties assigned to the operator of the

The preventive maintenance checks and services charts

equipment are listed below together with a reference to

(para 3-5, 3-8, and 3-11) outline functions to be

the paragraph covering the specific maintenance

performed at specific intervals. These checks and

function. The duties assigned to not require materials

services 'are performed to maintain Army electronic

other than those specified in paragraph 3-2.

equipment in a serviceable condition; that is, in good

a. Daily preventive maintenance checks and

general (physical) condition and in good operating

services (para 3-4).

condition.

To assist operators in maintaining

b. Cleaning (para 3-6).

serviceability, the chart indicates what to check, how to

c. Monthly preventive maintenance checks and

check, and what the normal conditions are.

The

services (para 3-7).

references column lists the appropriate paragraphs or

d. Preservation (para 3-9).

manuals that contain detailed repair or replacement

e. Quarterly preventive maintenance checks and

procedures. If the defect cannot be remedied by the

services (para 3-10).

operator, higher echelon maintenance is required.

f. Visual Inspection (para 3-12).

Records and reports of these checks and 'services must

g. Equipment performance check (para 3-13).

be made in accordance with the requirements set forth in

h. Replacement of test lamps (para 3-14).

TM 38-750.

i. Replacement of Radio Set Control 614U-6 (para

3-15)

3-4.

Daily Preventive Maintenance Checks and

Services

3-2.

Materials Required

Perform the maintenance functions indicated in the daily

a. Fine sandpaper, No. 000.

preventive maintenance checks and services chart (para

b. A clean, dry, lint-free cloth.

3-5) daily or under the special conditions listed below.

c. Trichloroethane.

a. When the equipment is installed initially.

d. A soft bristled brush.

b. When the equipment is returned to service after

higher echelon maintenance.

3-3.

Preventive Maintenance.

c. At least once a week if the equipment is

Preventive maintenance is the systematic care,

maintained in a standby condition.

servicing, and inspection of equipment to prevent the

occurrence of trouble, to reduce out-of-service time and

to assure that the equipment is serviceable.

3-5.

Daily Preventive Maintenance Checks and Services Chart

Sequence

No.

Item

Procedure

References

Exterior surfaces ...........................

Clean the MX-3736/ARM-45 exterior surface and meter

Para 3-6

glass. Check for broken meter glass. If meter glass is

broken, refer to higher category of maintenance for repair.

Meter, switches, knobs, and connectors.

a. During operation (sequences No. 3), check meter, a. None.

switches, knobs, and connectors (fig. 2-3) for loose or

insecure fastenings: tighten if required.

b. Switches should operate smoothly and have

b. None.

position detent action.

c. Check to see that meter pointer is not bent, broken, c. None.

or stuck. Refer all repairs to higher category of

maintenance.

Operation.......................................

During operation (para 2-6 through 2-10) be alert for any Para 3-13

evidence of unusual performance or faulty operation.

Observe meter for erratic action.

3-1