TM 10--3510--221--24
0270 00--2
LAUNDRY ADVANCED SYSTEM
MAINTENANCE ALLOCATION CHART (MAC)
0270 00
Maintenance Functions -- Continued
8. Replace. To remove an unserviceable item and install a serviceable counterpart in its place. “Replace” is
authorized by the MAC and is shown as the third position of the Source, Maintenance, and Recoverability (SMR)
code.
9. 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
malfunctioning; the act of isolating a fault within a system or Unit Under Test (ET).
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, face, 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
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 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).
