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TM 10-6630-240-12&P
TM 01461B-12&P/1
B-2. MAINTENANCE FUNCTIONS- cont
g.
Remove/Install. To remove and install the same item when required to perform service or other maintenance
functions. Install may be the act of emplacing, seating, or fixing into position a spare, repair part, or module
(component or assembly) in a manner to allow the proper functioning of an equipment or system.
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 3rd 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 I 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 subcolumn(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
B-2
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