Explanation of Columns in the MAC, Section II

TM10-3930-242-12

k. Rebuild. Consists of those services/actions

chart. The symbol designations for the various

necessary for the restoration of unserviceable

maintenance categories are as follows:

equipment to a like-new condition in accordance

C Operator or Crew

with original manufacturing standards. Rebuild is

O organizational Maintenance

the highest degree of materiel maintenance applied

F Direct Support Maintenance

to Army equipment. The rebuild operation in-

H -- General Support Maintenance

cludes the act of returning to zero those age meas-

D Depot Maintenance

urements (hours/miles, etc.) considered in classify-

e. Column 5, Tools and Equipment. Column 5

ing Army equipment/components.

specifies by code, those common tool sets (not

D-3. Explanation of Columns in the MAC,

individual tools) and special tools, TMDE, and

support equipment required to perform the desig-

Section II

nated function.

a. Column 1, Group Number. Column 1 lists

functional group code numbers, the purpose of

f. Column 6, Remarks. This column shall, when

which is to identify maintenance significant com-

applicable, contain a letter code, in alphabetical

ponents, assemblies, subassemblies, and modules

order, which shall be keyed to the remarks con-

with the next higher assembly, End item group

tained in Section IV.

number shall be "00".

D-4. Explanation of Columns in Tool and Test

b. Column 2, Component/Assembly. Column 2

Equipment Requirements, Section III

contains the names of components, assemblies,

subassemblies, and modules for which maintenance

a. Column 1, Reference Code. The tool and test

is authorized.

equipment reference code correlates with a code

used in the MAC, Section II, Column 5.

c. Column 3, Maintenance Function. Column 3

lists the function to be performed on the item

listed in Column 2. (For detailed explanation of

b. Column 2, Maintenance Category. The lowest

these functions, see paragraph D-2).

category of maintenance authorized to use the tool

or test equipment.

d. Column 4, Maintenance Category. Column 4

specifies, by the listing of a worktime figure in the

c. Column 3, Nomenclature. Name or identifi-

appropriate subcolumns, the category of mainte-

cation of the tool or test equipment.

nance authorized to perform the function listed in

column 3. This figure represents the active time

d. Column 4, National Stock Number. The Na-

required to perform that maintenance function at

tional stock number of the tool or test equipment.

the indicated category of maintenance. If the

number or complexity of the task within the listed

e. Column 5, Tool Numher. The manufacturer's

maintenance function vary at different mainte-

part number.

nance categories, appropriate worktime figures will

be shown for each category. The worktime figure

represents the average time required to restore an

item (assembly, subassembly, component, module,

D-5. Explanation of Columns in Remarks,

end item, or system) to a serviceable condition

Section IV

under typical field operating conditions. This time

includes preparation time (including any necessary

a. Column 1, Reference Code. The code record-

disassemble y/assembly time), troubleshooting/fault

ed in column 6, Section II.

location time, and quality assurance/quality con-

trol time in addition to the time required to per-

b. Column 2, Remarks. This column lists infor-

form specific tasks identified for the maintenance

mation pertinent to the maintenance function be-

functions authorized in the maintenance allocation

ing performed as indicated in the MAC, Section II.

D-2

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