TM 5-3825-229-14&P
h.
Replace. To remove an unserviceable item and install a serviceable counterpart in its
place. "Replace" 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
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. Rebuiid 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 Level. 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 item 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 to 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.
B-2
