i. Repair. The application of maintenance services (inspect, test,
service, adjust, align, calibrate, replace) or other maintenance ac-
tions (welding, grinding, riveting, straightening, facing, remachining,
or resurfacing) to restore serviceability to an item by correcting
specific damage, faults, malfunctions, or failure in a part, subassem-
bly, module (component or assembly), end item, or system.
j. Overhaul. That maintenance effort (service/action) necessary
to restore an item to a completely serviceable/operational condition
as prescribed by maintenance standards (e.g., 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/actions necessary for the
restoration of unserviceable equipment to a like-new condition in ac-
cordance with original manufacturing standards. Rebuild is the high-
est 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
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, assembles, subassemblies, and modules for which main-
tenance is authorized.
c. Column 3,Maintenance Functions. Column 3 lists the
to be performed on the item listed in column 2. When items
without maintenance functions, it is solely for the purpose
the group numbers in the Maintenance Allocation Chart (MAC)
Parts and Special Tools List (RPSTL) coincide.
d. Column 4, Maintenance Category. Column 4 specifies, by the
listing of a "work time" 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 per-
form that maintenance function at the indicated category of mainte-
If the number or complexity of the tasks within the listed
maintenance function vary at different maintenance categories, ap-
propriate "work time" figures will be shown for each category. The
number of task-hours specified by 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 prepara-
tion, troubleshooting, and quality assurance/quality control time in
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