TM 10-8110-202-13 & P
h. Replace. To remove an unserviceable item and install a serviceable counterpart in its place. “Re-
place” is authorized by the MAC and is shown as the 3d position code of the SMR code.
i.
Repair. The application of maintenance services, including fault location/troubleshooting, removal/
installation, and disassembly/assembly procedures, and maintenance actions to identify troubles and
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) prescribed to restore an item to a completely
serviceable/operational condition as required by maintenance standards in appropriate technical publica-
tions (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 materiel maintenance applied to Army equipment. The rebuild operation includes the act of returning to
zero those age measurements (hours/miles, etc. ) considered in classifying Army equipment/components.
B-3. EXPLANATION OF COLUMNS IN THE MAC, SECTION II
a. Column (1) - Group Number. Column 1 lists functional group code numbers, the purpose of which
is to identify maintenance significant components, assemblies, subassemblies, and modules with the next
higher assembly. End item group number shall be 00.
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 Col-
umn 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, sub-
assembly, 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/fault location 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
B-2
