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TM 11-6625-2975-12
B-2. MAINTENANCE FUNCTIONS. (CONT)
j. Overhaul. That maintenance effort (service/action) necessary to restore an item to a com-
pletely serviceable/operational condition as prescribed by maintenance standards (ie, DMWR) in
appropriate technical publications. 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 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, relies, etc) considered in classifying Army
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 Iists the functions to be performed on the item
listed in column 2. When items are listed without maintenance functions, it is solely for purpose of
having the 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 number of task-hours specified by the "worktime" figure
represents the average time required to restore an item (assembly, subassembly, component,
module, end item or system) to a serviceable condition under typical fleid 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
- Organizational
o
F
- Direct Support
- General Support
H
- Depot
D
B-2

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