MAINTENANCE ALLOCATION CHART
certified standard of known accuracy, to detect and
adjust any discrepancy in the accuracy of the instrument
being compared with the certified standard.
The purpose of the maintenance allocation chart is to
provide all activities with maintenance functions to be
(7) Install. To set up for use in an operational
performed at each level of maintenance.
environment such as an emplacement, site, or vehicle.
(8) Replace. To replace unserviceable items
with serviceable assemblies, subassemblies, or parts.
a. Column 1, Group Number. Column 1 lists group
numbers, the purpose of which is to identify
(9) Repair. To restore an item to serviceable
components, assemblies, subassemblies, and modules
condition. This includes, but is not limited to, inspection,
with the next higher assembly.
cleaning, preserving, adjusting, replacing, welding,
riveting, and strengthening.
b. Column 2, Functional Group. Column 2 Iists the
To restore an item to a
subassemblies, and modules on which maintenance is
completely serviceable condition as prescribed by
maintenance serviceability standards using the Inspect
and Repair Only as Necessary (IROAN) technique.
Maintenance functions will be limited to and defined as
(11) Rebuild. To restore an item to a standard
as nearly as possible to original or new condition in
appearance, performance, and life expectancy. This is
(1) Inspect. To determine serviceability of an
accomplished through complete disassembly of the
item by comparing its physical, mechanical, and
item, inspection of all parts or components, repair or
electrical characteristics with established standards.
replacement of worn or unserviceable elements (items)
To verify serviceability and to
specifications, and subsequent reassembly of the item.
detect electrical or mechanical failure by use of test
(12) Symbols. The letter 0, F, or H placed in
the appropriate column indicates the level responsible
(3) Service. To clean, to preserve, to charge,
for performing that particular maintenance function.
and to add fuel, lubricants, cooling agents, and air. If it
The symbol "%%" which applies to organizational
is desired that elements, such as painting and
maintenance indicates that the particular maintenance
lubricating, be defined separately, they may be so listed.
function may be performed provided it is specifically
authorized by the direct support maintenance officer.
Use of the symbol will apply only to replacement of
(4) Adjust. To rectify to the extent necessary
major assemblies and time-consuming operations which
to bring into proper operating range.
are within the capabilities of organization, but over
which control by the commodity commands is
To adjust specified variable
considered essential. In no case will the direct support
elements of an item to bring to optimum performance.
maintenance officer require the accomplishment of a "r
%" maintenance function by an organization or unit, and
(6) Calibrate. To determine the corrections to
in no case will a "%%" function authorize stockage of
be made in the readings of instruments or test
parts at organizational level.
equipment used ,in precise measurement. Consists of
the comparison of two instruments, one of which is a