TM
3-4240-309-20&P
j. Overhaul. That maintenance effort (service/
typical field operating conditions. This time includes
action) prescribed to restore an item to a completely
preparation time (including any necessary
serviceable/operational condition as required by
disassembly/assembly time), troubleshooting/fault
maintenance standards in appropriate technical
location time, and quality assurance/quality control
publications (i.e., DMWR). Overhaul is normally the
time in addition to the time required to perform the
highest degree of maintenance performed by the
specific tasks identified for the maintenance
Army. Overhaul does not normally return an item to
functions authorized in the maintenance allocation
like new condition.
chart. The symbol designations for the various
maintenance categories are as follows:
k. Rebuild. Consists of those services/actions
necessary for the restoration of unserviceable
C Operator or crew
equipment to a like new condition in accordance
O Organizational maintenance
with original manufacturing standards. Rebuild is the
F Direct support maintenance
highest degree of materiel maintenance applied to
H General support maintenance
Army equipment. The rebuild operation includes the
D Depot maintenance
act of returning to zero those age measurements
e. Column (5) - Tools and Equipment. Column 5
(hours/miles, etc) considered in classifying Army
specifies, by code, those common tool sets (not
equipments/components.
individual tools) and special tools, TMDE, and
support equipment required to perform the
designated function.
B-3. Explanation of Columns in the MAC,
f. Column (6) - Remarks. This column shall, when
Section II.
applicable, contain a letter code, in alphabetic order,
a. Column (1) - Group Number. Column 1 lists
which shall be keyed to the remarks contained in
functional group code numbers, the purpose of which
section IV.
is to identify maintenance significant components,
assemblies, subassemblies, and modules with the next
B-4. Explanation of Columns in Tool and Test
higher assembly. End item group number shall be
Equipment Requirements, Section Ill.
"00".
a. Column (1) - Reference Code. The tool and test
b. Column (2) - Component/Assembly. Column 2
equipment reference code correlates with a code used
contains the names of components, assemblies,
in the MAC, section II, column 5.
subassemblies, and modules for which maintenance is
b. Column (2) - Maintenance Category. The lowest
authorized.
category of maintenance authorized to use the tool or
c. Column (3) - Maintenance function. Column 3
test equipment.
lists the functions to be performed on the item listed
c. Column (3) - Nomenclature. Name or
in column 2. (For detailed explanation of these
identification of the tool or test equipment.
functions, see paragraph B-2.)
d. Column (4) - National Stock Number. National
d. Column (4) - Maintenance Category. Column 4
stock number of the tool or test equipment.
specifies, by the listing of a work time figure in the
appropriate subcolumn(s), the category of
e. Column (5) - Tool Number. The manufacturer's
maintenance authorized to perform the function
part number.
listed in column 3. This figure represents the active
B-5. Explanation of Columns in Remarks,
time required to perform that maintenance function
at the indicated category of maintenance. If the
Section IV.
number or complexity of the tasks within the listed
a. Column 1 - Reference Code. The code recorded
maintenance function vary at different maintenance
in column 6, section II.
categories, appropriate work time figures will be
b. Column 2 - Remarks. This column lists
shown for each category. The work time figure
information pertinent to the maintenance function
represents the average time required to restore an
being performed as indicated in the MAC, section II.
item (assembly, subassembly, component, module,
end item, or system) to a serviceable condition under
B-2
