DEFINITIONS. - TM-55-4920-411-13-P0053

TM 55-4920-411-1 3&P

any single maintenance function (e.g., test, repair),

B-3. DEFINITIONS.

(hen the higher maintenance level(s) that can accom-

a. Inspect. To determine serviceability of an item by

plish additional tasks will also be indicated.

comparing its physical, mechanical and electrical

c. A maintenance function assigned to a maintenance

characteristics with established standards.

level will automatically be authorized to be performed

b. Test. To verify serviceability and detect incipient

at any higher maintenance level.

failure by measuring the mechanical or electrical

d. A maintenance function that cannot be performed

characteristics of an item and comparing those charac-

at the assigned level of maintenance for any reason

teristics with prescribed standards.

may be evacuated to the next higher maintenance

c. Service. To clean, to preserve, to charge, and to

organization. Higher maintenance levels will perform

add fuel, lubricants, cooling agents and air.

the maintenance functions of lower maintenance levels

when required or directed by the appropriate com-

d. Adjust. To rectify to the extent necessary to bring

mander.

into proper operating range.

e. The assignment of a maintenance function will not

e. Align. To adjust specified variable elements of an

be construed as authorization to carry the associated

item to bring to optimum performance.

repair parts in stock, Authority to requisition, stock, or

f. Calibrate. To determine the corrections to be made

otherwise secure necessary repair parts will be as

in the readings of instruments or test equipment used

specified in the repair parts and special tools list

in precise measurement. Consists of the comparison of

appendix.

two instruments, one of which is a certified standard of

f. Normally there will be no deviation from the

known accuracy, to detect and adjust any discrepancy

assigned level of maintenance. In cases of operational

in the accuracy of the instrument or test equipment

necessity, maintenance functions assigned to a main-

being compared with the certified standard.

tenance level may, on a one-time basis and at the

g. Install. To set up for use in an operational envi-

request of the lower maintenance level, be specifically

ronment such as an emplacement, site or vehicle.

authorized by the maintenance officer of the level of

maintenance to which the function is assigned. The

h. Replace. To replace unserviceable items with

special tools. equipment, etc. required by the lower

serviceable assemblies, subassemblies or parts.

level of maintenance to perform this function will be

i. Repair. To restore an item to serviceable condition

furnished by the maintenance level to which the func-

through correction of a specific failure or unserviceable

tion is assigned. This transfer of a maintenance func-

condition. This includes, but is not limited to, inspec-

tion to a lower maintenance level does not relieve the

tion, cleaning, preserving, adjusting, replacing, weld-

higher maintenance level of the responsibility of the

ing, riveting, and strengthening.

function. The higher level of maintenance has

the authority to determine:

j. Overhaul. To restore an item to a completely

serviceable condition as prescribed by maintenance

(1) If the lower level is capable of perform-

serviceability standards prepared and published for the

ing the work,

specific item to be overhauled.

(2) If the lower level will require assistance

k. Rebuild. To restore an item to a standard as

or technical supervision and on-site inspection.

nearly as possible to the original or new condition in

(3) If the authorization will be granted.

appearance, performance, and life expectancy. This is

accomplished through the maintenance technique of

complete disassembly of the item, inspection of all

g. Organizational through depot maintenance of the

parts or components, repair or replacement of worn or

US Army Electronics Command equipment will be

unserviceable elements (items) using original manu-

performed by designated US Army Electronics Com-

facturing tolerances and specifications, and subsequent

mand personnel.

reassembly of the item.

h. Changes to the MAC will be based on continuing

evaluation and analysis by responsible technical per-

sonnel and on reports received from field activities.

B-2

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