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TM5-4120-376-14
i. Repair. The application of maintenance services.
(1) Including fault location/troubleshooting.
(2) Removal/installation, and disassembly/assembly.
(3) procedures and maintenance actions.
(4) To identify troubles and restore serviceability to an item correcting specific damage,
fault, malfunction, or failure in a part, subassembly, module (component assembly), end item,
or system.
j. Overhaul. That maintenance effort (service/action) prescribed to restore an item to a
completely serviceable/operational condition as required by maintenance standards in appropri-
ate technical publications (i.e. DMWR). 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 accordance with original manufacturing standards.
Rebuild is the highest degree of material maintenance applied to Army equipment. The rebuild
opera-tion includes the act of returning to zero those age measurements (hours/miles, etc)
considered in classifying Army equipment/components.
B-3. EXPLANATION OF COLUMNS IN THE MAC, SECTION II.
a. Services. Inspect, test, service, adjust, align, calibrate, and/or replace.
b. Fault Locate/Troubleshoot. The process of investigating and detecting the cause of
equipment malfunctioning; the act of isolating a fault within a system or unit under test (UUT).
c. Disassemble/assemble-encompasses the step-by-step taking apart (or breakdown) of a
spare/functional group coded item to the level of its least componency identified as
maintenance significant (i.e., assigned an SMR code) for the category of maintenance under
consideration.
d. Actions. Welding, grinding, riveting, straightening, facing, remachinery, and/or
resurfacing.
(1) Column (1), Group Number. Column 1 lists - Functional group code numbers, the
purpose of which is to identify maintenance significant components, assemblies, subassemblies,
and modules with the next higher assembly. End item group number shall be “00”.
(2) Column (2), Component/Assembly. Column contains the names of components,
assemblies, sub-assemblies, and modules for which maintenance is authorized.
(3) Column (3), Maintenance Functions.
Column 3 lists the functions to be performed on
the item listed in Column 2. (For detailed explanation of these functions, see paragraph B-2).
(4) Column (4), Maintenance Level. This column is made up of sub-columns for each
category of maintenance. Work time figures are listed in these subcolumns for the lowest level
of maintenance authorized to perform the function listed in Column 3. These figures indicate
B-2
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