B-2. MAINTENANCE FUNCTIONS (Con't).
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 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
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 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 in the
appropriate subcolumn( 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. T h i s t i m e i n c l u d e s p r e p a r a t i o n t i m e (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:
Unit (Operator or Crew)
Unit (Organizational) Maintenance
Direct Support Maintenance
General Support 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
f. 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,
a. 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.
b. Column 2, Maintenance Level. The lowest level of maintenance authorized to use the tool
or test equipment.