Technical data

TM 9-1005-319-23&P 0043
0043-3
10. Overhaul. That maintenance effort (service/action) prescribed to restore an item to a completely
serviceable/operational condition as required by maintenance standards 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.
11. 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 (e.g., hours/miles) considered in classifying Army
equipment/components.
Explanation of Columns in the MAC
Column (1) Group Number. Column (1) lists Functional Group Code (FGC) numbers, the purpose of which is
to identify maintenance significant components, assemblies, subassemblies, and modules with the Next
Higher Assembly (NHA).
Column (2) Component/Assembly. Column (2) contains the item names of components, assemblies,
subassemblies, and modules for which maintenance is authorized.
Column (3) Maintenance Function. Column (3) lists the functions to be performed on the item listed in
column (2). (For a detailed explanation of these functions refer to "Maintenance Functions" outlined above).
Column (4) Maintenance Level. Column (4) specifies each level of maintenance authorized to perform each
function listed in column (3), by indicating work time required (expressed as manhours in whole hours or
decimals) in the appropriate subcolumn. This work time figure represents the active time required to
perform that maintenance function at the indicated level of maintenance. If the number or complexity of the
tasks within the listed maintenance function varies at different maintenance levels, appropriate work time
figures are to be shown for each level. 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 preparation time (including any necessary
disassembly/assembly time), troubleshooting/fault location time, and quality assurance time in addition to
the time required to perform the specific tasks identified for the maintenance functions authorized in the
MAC. The symbol designations for the various maintenance levels are as follows:
Field
:
C - Crew maintenance
O - Service maintenance
F - Field maintenance
Sustainment
:
L - Specialized Repair Activity
H - Below Depot maintenance
D - Depot maintenance
NOTE
The "L" maintenance level is not included in column (4) of the MAC. Functions to
this level of maintenance are identified by a work time figure in the "H" column of
column (4), and an associated reference code is used in the REMARKS column (6).
This code is keyed to the remarks and the SRA complete repair application is
explained there.