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TM 10-8110-203-12&P
B-2. MAINTENANCE FUNCTIONS - continued.
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 3id 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. 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 (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 numbers are "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 a 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 (expressed as man-hours
shown as whole hours or decimals) in the appropriate sub-column(s), the level 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 level of maintenance. If the number or the complexity of the tasks within the listed maintenance function vary
at different maintenance levels, appropriate work time figures will be shown for each level. 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 item 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 system designations for the various maintenance levels are shown on the
following page.
B-2
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