TM 9-2330-275-14&P
B-2. MAINTENANCE FUNCTIONS (Con’t).
serviceable/operational condition as required by maintenance standards inappropriate technical publications, such
as a depot maintenance work requirement (DMWR). Overhaul is normally the highest degree of maintenance
performed by the Army. Overhaul does not normally return an item to like-new condition.
j. Overhaul. That maintenance effort (service/action) prescribed to restore an item to a completely
k. Rebuild. Consists of those services/action necessary for the restoration of unserviceable equipment
to a Iike-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 equiprnent/components.
B-3. EXPLANATlON OF COLUMNS IN THE MAC, SECTION Il.
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
assernbly. 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 Functions.
Column 3 Iii the functions to be performed on the item listed in
Column 2. (For a detailed explanation of these functions, refer to 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 level of maintenance authorized to perform the function lied in Column 3. This figure represents
the active time required to perform that maintenance function at the indicated Ievel of maintenance. If the number or
complexity of the tasks within the Iisted 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 MAC. The symbol designations for the
various maintenance levels are as follows
c . . . . . .
0 . . . . . .
D . . . . . .
Unit (Operator or Crew) Maintenance
Unit (Organizationa/) Maintenance
Direct Support Maintenance
General Support Maintenance
Depot Maintenance
e. Column 5. Tools and Equipment. Column 5 specifies, by code, those common tool Sets (not individual
tools), special tools, TMDE (test, measurement, and diagnostic equipment), and support equipment required to
perform the designated function.
f. Column 6. Remarks. This column shall, when applicable, contain a Ietter code, in alphabetical order, which
shall be keyed to the remarks contained in Section IV.
B-4. EXPLANATION OF COLUMNS IN TOOL AND TEST EQUIPMENT REQUIREMENTS,
SECTION Ill.
a. Column 1. Tool or Test Equipment Reference Code. The tool or test equipment reference code
correlates with a code used in the MAC, Section II, Column 5.
b. Column 2 Maintence level.
The lowest level of maintenance authorized to use the tool or test
equipment.
c. Column 3. Nomenclature. Name or identification of the tool or test equipment.
B-2
