M A I N T E N A N C E ALLOCATION CHART
(7) Install. To set up for use in an operational
environment such as an emplacement, site, or vehicle.
The purpose of the maintenance allocation chart is to
provide all activities with maintenance functions to be
(8) Replace. To replace unserviceable items with
performed at each level of maintenance.
serviceable assemblies, subassemblies, or parts.
(9) Repair. To restore an item to serviceable
condition. This includes, but is not limited to, inspection,
cleaning, preserving, adjusting, replacing, weldlng, riveting,
a. Column 1, Group Number. Column 1 lists group
numbers, the purpose of which is to identify components,
(10) Overhaul. To restore an item to a completely
assemblies, subassemblies, and modules with the next
serviceable condition as prescribed by maintenance
serviceability standards prepared and published for the
specific item to be overhauled.
b. Column 2, Functional Group. Column 2 lists the
noun names of components, assemblies, subassemblies,
(11) Rebuild. To restore an item to a standard as
and modules on which maintenance is authorized.
nearly as possible to original or new condition in
appearance, performance, and life expectancy. This is
accomplished through complete disassembly of the item,
c. Column 3, Maintenance Functions. Maintenance
i n s p e c t i o n of all parts or components, repair or
functions will be limited to and defined as follows:
replacement of worn or unserviceable elements (items)
using original manufacturing tolerances and specifications,
(1) Inspect. To determine serviceability of an item
and subsequent reassembly of the item.
by comparing its physical, mechanical, and electrical
characteristics with established standards.
(12) Symbols. The symbol O, F, H, or D placed in
the appropriate column indicates the level responsible for
(2) Test. To verify serviceability and to detect
performing that particular maintenance function. The
electrical or mechanical failure by use of test equipment.
s y m b o l " % % " w h i c h applies to organizational
maintenance indicates the level responsible for performing
(3) Service. To clean, to preserve, to charge, and to
that particular maintenance function may be performed
add fuel, lubricants, cooling agents, and air. If it is desired
provided' it is specifically authorized by the direct support
that elements, such as painting and lubricating, be defined
maintenance officer. Use of the symbol will apply only to
separately, they may be so listed.
replacement of major assemblies and time-consuming
o p e r a t i o n s w h i c h are within the capabilities of
(4) Adjust. To rectify to the extent necessary to
organization, but over which control by the commodity
bring into proper operating range.
commands is considered essential. In no case will the
d i r e c t s u p p o r t maintenance officer require the
(5) Align. To adjust specified variable elements of
accomplishment of a "%%" maintenance function by an
an item to bring to optimum performance.
organization or unit, and in no case will a "%%" function
authorize stockage of parts at organizational level.
(6) Calibrate. To determine the corrections to be
made in the readings of instruments or test equipment
d. Column 4, Tools and Equipment. This column will
used in precise measurement. Consists of the comparison
be used to specify, by code, those tools and test
of two instruments, one of which is a certified standard
equipment required to perform the designated function.
of known accuracy, to detect and adjust any discrepancy
in the accuracy of the instrument being compared with
e. Column 5, Remarks. Self-explanatory.
the certified standard.