Quantcast Explanation of Columns in the MAC - TM-9-2330-326-14-P0201

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TM 9-2330-326-14&P
Maintenance Functions are Limited to and Defined as Follows (Cont.):
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 material maintenance applied to Army equipment. The rebuild operation
includes the act of returning to zero those age measurements (e.g., hours/miles, etc.)
considered in classifying Army equipment/components.
Explanation of Columns in the MAC
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."
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 subparagraph entitled
"Maintenance Functions" immediately 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 man-
hours in whole hours or decimals) in the appropriate sub column. 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
C -- Operator or Crew maintenance
L -- Specialized Repair Activity (SRA)
O -- Organizational maintenance
H -- General Support maintenance
F -- Direct Support maintenance
D -- Depot maintenance


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