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 0158 00
TM 11-5895-1847-12&P
7.
Remove/Install. To remove and install the same item when required to perform service or other maintenance
functions. Install may be the act of emplacing, seating or fixing into position a spare, repair part or module
(component or assembly) in a manner to allow the proper functioning of an equipment or system.
8.
Replace. To remove an unserviceable item and install a serviceable counterpart in its place. "Replace" is
authorized by the MAC and assigned maintenance level is shown as the third position code of the Source,
Maintenance and Recoverabilty (SMR) code.
9.
Repair. The application of the maintenance services, including fault location/troubleshooting, removal/
installation, disassembly/assembly procedures and maintenance actions to identify troubles and restore
serviceability to an item by correcting specific damage, fault, malfunction or failure in a part, subassembly,
module (component or assembly), end item or system.
NOTE
The following definitions are applicable to the "repair" maintenance function:
Services - inspect, test, service, adjust, align, calibrate, and/or replace.
Fault location/troubleshooting - 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).
Disassembly/assembly - the step-by-step breakdown (taking apart) of a spare/functional
group coded item to the level of its least component, that is assigned an SMR code for the
level of maintenance under consideration (i.e., identified as maintenance significant).
Actions - welding, grinding, riveting, straightening, facing, machining and/or resurfacing.
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 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 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 preformed 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
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