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TM10-4330-235-13&P
B-2. MAINTENANCE FUNCTIONS - Continued
i.
Repair. The application of maintenance services1 or other maintenance actions2 to restore serviceability
to an item by correcting specific damage, fault, malfunction, or failure in a part, subassembly, module (component
or assembly), end item, or system.
j.
Overhaul.
That maintenance effort (service/action) necessary to restore an item to a completely
serviceable/operational condition as prescribed by maintenance standards in appropriate technical Publications i.e.,
DMWR). Overhaul is normally the highest degree of maintenance performed by the Army. Overhaul does not
normally return an item to like new condition.
k.
Rebuild. Consists of those services/actions necessary for the restoration of unserviceable equipment to
a like new condition in accordance with original manufacturing standards. Rebuild is the highest degree of material
maintenance applied to Army equipment. The rebuild operation includes the act of returning to zero those age
measurements (hour/miles, etc.) considered in classifying Army equipment components.
B-3. EXPLANATION OF COLUMNS IN THE MAC, SECTION Il
a.
Column 1, Group Number. Column 1 lists functional group code numbers, the purpose of which is to
identify components, assemblies, subassemblies, and modules with the next higher assembly.
b. Column 2, Component/Assembly.
Column 2 contains the names of components, assemblies,
subassemblies, and modules for which maintenance is authorized.
c.
Column 3, Maintenance Function. Column 3 lists the functions to be performed on the item listed in
Column 2. (For detailed explanation of these functions, see paragraph B-2).
d. Column 4, Maintenance Category.
Column 4 specifies, by the listing of a work time figure in the
appropriate subcolumn(s), the category of maintenance authorized to perform the function listed in Column 3. This
figure represents the active time required to perform that maintenance function at the indicated category of
maintenance. If the number or complexity of the tasks within the listed maintenance function vary at different
maintenance categories, appropriate work time figures will be shown for each category. The work time figure
represents the average time required to restore an item (assembly, subassembly, component, module, end item,
or system) to a serviceable condition under typical field operating conditions. This time includes preparation time
(including any necessary disassembly/assembly time), troubleshooting time, and quality assurance/quality control
time in addition to the time required to perform the specific tasks identified for the maintenance functions authorized
in the maintenance allocation chart. The symbol designations for the various maintenance categories are as follows:
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operator or crew.
O . . . . . . . . . . . . . . . . . . . . . . .
Organizational maintenance.
F
. . . . . . . . . . . . . . . . . . . . . . .
Direct support maintenance.
H
. . . . . . . . . . . . . . . . . . . . . . General support maintenance.
D
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Depot maintenance.
e.
Column 5, Tools and Equipment. Column 5 specifies, by code, those common tool sets (not individual
tools) and special tools, TMDE, and support equipment required to perform the designated function.
f.
Column 6, Remarks. This column shall, when applicable, contain a letter code, in alphabetical order,
which shall be keyed to the remarks contained in Section IV.
1Services - inspect, test, service, adjust, aline, calibrate, or replace.
2Actions - welding, grinding, riveting, straightening, facing, remachining, or resurfacing.
B-2
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