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.
EXPLANATION OF COLUMNS IN THE MAC, SECTION II
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."
Column 2, Component/Assembly. Column 2 contains the names of components, assemblies, subassemblies, and
modules for which maintenance is authorized.
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 C-2.)
Column 4, Maintenance Level. Column 4 specifies, by the listing of a work time figure 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 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 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 levels are as follows:
C.......................Operator or Crew
0 .......................Unit Maintenance
F .......................Direct Support Maintenance
H.......................General Support Maintenance
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.
Column 6, Remarks. This column shall, when applicable, contain a letter code, in alphabetic order, which shall be
keyed to the remarks contained in Section IV.
EXPLANATION OF COLUMNS IN TOOL AND TEST EQUIPMENT REQUIREMENTS, SECTION III
Column 1, Tool or Test Equipment Reference Code. The tool and test equipment reference code correlates with a
code used in the MAC, Section II, Column 5.
Column 2, Maintenance Level. The lowest level of maintenance authorized to use the tool or test equipment.
Column 3, Nomenclature. Name or identification of the tool or test equipment.
Column 4, National/NATO Stock Number. The National or NATO Stock Number of the tool or test equipment.
Column 5, Tool Number. The manufacturers part number.