TM 9-4910-663-12
g. Install. The act of emplacing, seating, or fixing into posi-
tion of an item, part, module (component or assembly) in a manner to
allow the proper functioning of the equipment/system.
h. Replace. The act of substituting a serviceable like-part,
subassembly, module (component or assembly) in a manner to allow the
proper functioning of an equipment/system.
i. Repair. The application of maintenance services (inspect,
test, service, adjust, align, replace) or other maintenance actions
(welding, grinding, riveting, straightening, facing, remachining, or
resurfacing) to restore serviceability to an item by correcting speci-
fic damage, fault, malfunction, or failure in a part, subassembly,
module/component/assembly, end item, or system.
Overhaul. That maintenance effort (service/action) necessary
j.
to restore an item to a completely serviceable/operational condition
as prescribed by maintenance standards (e.g. , DMWR) in pertinent
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.
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 material 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.
l. Symbols. The uppercase letter placed in the appropriate column
indicates t e lowest level at which that particular function is to be
performed.
D-4. EXPLANATION OF FORMAT. The maintenance allocation chart con-
sists of five columns. Each of the columns is explained below:
a. Column 1, Group Number. Column 1 lists group numbers, the
purpose of which is to match components, assemblies, subassemblies,
and modules with the next higher assembly.
b. Column 2, Component/Assembly. Column 2 lists the next higher
group and the item names of components, assemblies, subassemblies, and
modules within the group for which maintenance is authorized.
Column 3, Maintenance Functions.
Column 3 lists the eleven
c.
maintenance functions.
d. Column 4, Maintenance Level.
The following symbols shall be
used to function responsibility:
D-2