TM 9-2330-335-14&P
0081-2
0081
MAINTENANCE FUNCTIONS - CONTINUED
7.
Remove/Install.
To remove and install the same item when required to perform service or other maintenance functions.
Installation may be the act of emplacing or seating a spare, repair part, or module (component or assembly) into position
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. Replacement is authorized by
the MAC and the assigned maintenance level is shown as the third position code of the Source, Maintenance and
Recoverability (SMR) code.
9.
Repair.
Repair is the application of 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 - Inspecting, testing, service, adjustment, alignment, calibration, and/or replacement.
•
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, assigned a 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 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 equipment/components.
EXPLANATION OF COLUMNS IN THE MAC, TABLE 1
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1.
Column (1) - Group Number.
Column (1) lists Group numbers, the purpose of which is to identify maintenance
significant components, assemblies, subassemblies, and modules with the Next Higher Assembly (NHA).
2.
Column (2) - Component/Assembly.
Column (2) contains the item names of components, assemblies, subassemblies,
and modules for which maintenance is authorized.
3.
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.)