C9, TM 9-2350.-230-12
Operation
Definition
INSTALL
To set up for use in an operational environment such
as an emplacement, site, or vehicle.
REPLACE
To replace unserviceable items with serviceable like
items.
REPAIR
Those maintenance operations necessary to restore an
item to serviceable condition through correction of
material damage or a specific failure. Repair may be
accomplished at each category of maintenance.
OVERHAUL
Normally, the highest degree of maintenance performed
by the Army, in order to minimize time work is in
process, consistent with quality and economy of
operation. It consists of that maintenance necessary
to restore an item to completely serviceable condition
as prescribed by maintenance standards in technical
publications for each item of equipment. Overhaul
normally does not return an item to like new, zero
mileage, or zero hour condition.
REBUILD
The highest degree of materiel maintenance. It con-
sists of restoring equipment as nearly as possible to
new condition in accordance with original manufactur-
ing standards. Rebuild is performed only when requir-
ed by operational considerations or other paramount
factors and then only at the depot maintenance cate-
gory. Rebuild reduces to zero the hours or miles the
equipment, or component thereof, has been in use.
subassemblies, and modules on which maintenance is
C-3
Explanation of Format
authorized.
a. Section C-2.
Column 3, maintenance function.
(3)
Column 3 is divided into 11 columns (subcolumns (a)
Column 1, group number. Column 1
(1)
through (k) , one for each of the maintenance operations
lists group numbers, the purpose of which is to identify
defined in paragraph C-2.
components, assemblies, subassemblies, and modules
with the functional group.
Use of symbols.
An uppercase letter
(4)
placed
in
the
appropriate
column
indicates
Column 2, functional group. Column 2
(2)
lists the noun names of components, assemblies,
C-2
