Preventive Maintenance Checks and Services.

18.1. Operator's Preventive Maintenance

b. Preventive Maintenance Checks and Services.

Checks and Services Periods

The preventive maintenance checks and services

charts (pars. 18.2 and 18.3) outline functions to be

a. Daily. Preventive maintenance checks and

performed at specific intervals. These checks and

services of the equipment are required on a daily

services are to maintain Army electronic equip-

basis while the equipment is in use. If the equip-

ment in serviceable condition; that is, in good

ment is being maintained in a standby (ready for

general (physical) condition and in good operating

immediate operation) condition, the daily checks

condition. To assist operators in maintaining

and services should be performed once each week.

serviceability, the charts indicate what to check,

Paragraph 18.2 specifies checks and services that

how to check, and the normal conditions. The

must be accomplished daily and when the equip-

references column lists the areas that contain

ment is initially placed in service or removed from

supplementary information. If the defect cannot

service.

be remedied by the operator, higher echelon main-

b. Weekly. Perform the maintenance functions

tenance is required. Records and reports of these

indicated in the weekly preventive maintenance

checks and services must be made in accordance

checks and services chart (par. 18.3) once each

with the requirements set forth in TM 38-750.

week. Equipment in limited storage (requires

service before operation) does not require weekly

Add paragraphs 18.1 through 18.4 after para-

maintenance.

graph -18:

18.2. Daily Preventive Maintenance Checks and Services Chart

References

Procedure

Item

Sequence

Par. 18.4a, b, and c.

Clean exterior surfaces (fig. 1), including panel and

Exterior surfaces ----------------

meter glasses. Check meter glasses and indicator

lenses for cracks.

C o n t r o l s - - - - - - - - - - - - - - - - - - - - - - Inspect knobs (fig. 3), for looseness- ------- -----

Operation --------------------- During operation, be alert for any unusual signs or

conditions.

18.3. Weekly Preventive Maintenance Checks and Services Chart

References

Procedure

Item

Sequence

No.

Check controls (fig. 3) for binding and scraping; tap

Control

----------------------

lightly to check for cutout due to loose contacts.

Controls knobs should operate smoothly, be pro-

perly secured to shafts, and should not bind.

Tighten loose knobs and be sure that knobs do

not rub against panel.

Par. 18.4d.

Cords and cables -----------

Inspect cords and cables (figs. 1 and 2) for breaks,

cuts, kinks, deterioration, strain, and fraying.

App. III.

End item of equipment

------

Inspect equipment for completeness ---------------

b. Remove grease, fungus, and ground-in dirt

18.4. Cleaning

with a cloth dampened (not wet) with cleaning

Inspect the exterior of the equipment. The

compound; dry thoroughly.

exterior surfaces should be clean, and free of dust,

c. Remove dust or dirt from plugs and jacks

dirt, grease, and fungus.

with a brush.

a. Remove dust and loose dirt with a clean,

d. Clean the cords and cable with a cloth slightly

soft, lint-free cloth.

d a m p e n e d with cleaning compound; dry

Cleaning compound is flammable

Warning:

thoroughly.

and its fumes are toxic. Provide adequate ventila-

Add section II after paragraph 18.4:

tion. Do not use near a flame.

6942A

AGO