TM 11-6660-200-14
B-2.
MAINTENANCE FUNCTIONS. (CONT)
j.
Overhaul. That maintenance effort (service/action) necessary to restore an item to a completely
serviceable/operational condition as prescribed by maintenance standards in appropriate technical publications (ie,
DMWR). Overhaul is normally the highest degree of maintenance performed by the Army. Overhaul does not normally
return an item to a 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 equipment/components.
B-3.
COLUMN ENTRIES.
a. Column 1, Group Number. Column 1 lists group numbers, the purpose of which is to identify components,
assemblies, subassemblies, and modules with the next higher assembly.
b. Column 2, Component/Assembly. Column 2 contains the noun 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. When items are listed without maintenance functions, it is solely for the purpose of having group numbers in the MAC
and RPSTL coincide.
d. Column 4, Maintenance Category. Column 4 specifies, by the listing of a "worktime" figure in the appropriate
subcolumn (s), the lowest 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 category of maintenance. If the
number or complexity of the tasks within the listed maintenance function varies at different maintenance categories,
appropriate "worktime" figures will be shown for each category. The "worktime" figure represents the average time
required to restore an item (assembly, subassembly, component, module, end item, or system) to a service-
able condition under typical field operating conditions. This time includes preparation time, troubleshooting 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. Subcolumns of column 4 are as follows:
C - Operator/Crew
O - Organizational
F - Direct Support
H - General Support
D - Depot
e. Column 5, Tools and Equipment. Column 5 specifies, by code, those common tool sets (not individual tools),
special tools, TMDE, and support equipment required to perform the designated function.
f.
Column 6, Remarks. Column 6 contains an alphabetic code which leads to the remark in section IV.
Remarks, which is pertinent to the item opposite the particular code.
B-2
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