TM 9-2320-283-20-3
B-2. MAINTENANCE FUNCTIONS {Continued).
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.
and
is shown as
h. Replace.
To remove an
unserviceable item and
install a serviceable
counterpart in its place.
"Replace" is authorized by the MAC
the third position code of the SMR code.
including fault
restore service-
malfunction, or
i. Repair.
The application of
maintenance services1
location/troubleshooting2, removal/installation, and disassembly/assembly3 pro-
cedures, and maintenance
actions4 to
identify troubles
and
ability to an
item by correcting specific damage,
fault,
failure to 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 conditions.
k. 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
Army equipment/components.
in classifying
B-3. EXPLANATION OF COLUMNS IN THE MAC, SECTION II.
a. Column 1, Group Number.
Column 1 lists functions group code numbers, the
purpose of which is to identify maintenance significant components, assemblies,
subassemblies, and modules with the higher assembly.
1Services - inspect, test, service, adjust,
2Fault location/troubleshooting
aline, calibrate, and/or replace.
- 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 - encompasses the step-by-step taking apart (or break-
down) of a spare/functional group coded item to the level of its least
componency identified as maintenance significant (i.e., assigned an SMR code)
for the category of maintenance under consideration.
4Actions - welding,
grinding, riveting,
straightening, facing, remachining,
and/or resurfacing.
B-2
