TM 5-3825-270-23&P
0222
The Army Maintenance System MAC - Continued
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 equipment or system.
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
Recoverability (SMR) code.
REPAIR
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- Inspect, test, service, adjust, align, calibrate, and/or replace.
FAULT LOCATION/TROUBLESHOOTING - The process of investigating and detecting
the cause of equipment malfunction; 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.
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.
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.
0222-3
