TM 10-5411-224-14
g.
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.
h.
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 3rd position code of the SMR code.
i.
Repair. The
application
of
maintenance
services1,
including
fault
location/
troubleshooting2,
removal/installation, and disassembly/assembly3 procedures, and maintenance actions4 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.
j.
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 (i.e.,
DMWR). Overhaul is normally the highest degree of maintenance performed by the Army. Overhaul does not normally
return an item to like new condition.
k.
Rebuild.
Consists of those services/action 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) considered in classifying Army equipment/components.
B-3.
EXPLANATION OF COLUMNS IN THE MAC, SECTION II.
a.
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.
b.
Column 2, Component/Assembly. Column 2 contains the item names of components, assemblies,
subassemblies, and modules for which maintenance is authorized.
c. Column 3, Maintenance Function. Column 3 list the functions to be performed on the item listed in
Column 2. (For detailed explanation of these functions, see paragraph B-2.)
d.
Column 4, Maintenance category.
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 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 vary at different maintenance levels, appropriate work time figures are shown for each level.
1Services - Inspect, test, service, adjust, align, calibrate, and/or replace.
2Fault 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).
3Disassembly/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).
4Actions - Welding, grinding, riveting, straightening, facing, machining, and/or resurfacing.
B-2
