TM 11-7021-202-12
j. Overhaul. That maintenance effort (service/action) necessary to restore an item to a completely ser-
viceable/operational condition as prescribed by maintenance standards (i.e., 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. Rebuiid. Consists of those services/actions necessary for the restoration of unserviceable equip-
ment to a like 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
equipments/components.
B-3. COLUMN ENTRIES
a. Column 1, Group Number. Column 1 lists group numbers, the purpose of which is to indentify com-
ponents, assemblies, subassemblies, and modules with the next higher assembly.
b. Column 2, Component/Assembly. Column 2 contains the noun name of components, assemblies,
subassemblies, and modules for which maintenance is authorized.
c. Column 3, Maintenance Functions. 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 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 of complexity of the tasks within the listed
maintenance function vary 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 field operating conditions. This time includes prepara-
tion time, troubleshooting time, and quality assurance/quality control time in addition to the time re-
quired 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 Organization
F Direct Support
H General Support
D Depot
e. Column 5, Tools and Equipment. Column 5 specifies by code, those common tool sets, (not indi-
vidual tools) and special tools, 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
