MAINTENANCE ALLOCATION CHART
9. Overhaul. To restore an item to a com-
pletely serviceable condition as prescribed by .
maintenance serviceability standards prepared and
The purpose of the maintenance allocation chart is
published for the specific item to be overhauled.
to provide all activities with maintenance functions
to be performed at each level of maintenance.
10. Rebuild. To restore an item to a stand-
ard as nearly as possible to original or new condi-
tion in appearance, performance, and life
expectancy. This is accomplished through com-
a. Column 1, Group number. Column 1 lists
group numbers, the purpose of which is to identify
plete disassembly of the item, inspection of all
components, assemblies, subassemblies, and
parts or components, repair or replacement of
worn or unserviceable elements (items) using
modules with the next higher assembly.
original manufacturing tolerances and specifica-
tions, and subsequent reassembly of the item.
b. Column 2, Functional group. Column 2
lists the noun names of components, assemblies,
11. Symbols. The symbol, O, F, H, or D
subassemblies, and modules on which maintenance
placed in the appropriate column indicates the level
responsible for performing that particular mainte -
nance function. The symbol "%%" which applies to
c. Column 3, Maintenance functions. Mainte-
organizational maintenance indicates that the par-
nance functions will be limited to and defined as
ticular maintenance function may be performed
provided it is specifically authorized by the direct
1. Inspect. To determine serviceability of
support maintenance officer. Use of the symbol
will apply only to replacement of major assemblies
an item by comparing its physical, mechanical,
and time-consuming operations which are within
and electrical characteristics with established
the capabilities of organization but over which con-
trol by the commodity commands is considered
essential. In no case will the direct support main-
2. Test, To verify serviceability and to
tenance officer require the accomplishment of a
detect electrical or mechanical failure by use of
"% %" maintenance function by an organization or
unit, and in no case will a "% %" function authorize
stockage of parts at organizational level.
3. Service. To clean, to preserve, to
charge, and to add fuel, lubricants, cooling agents,
d. Column 4, Tools and equipment. This
and air. If it is desired that elements, such as
column will be used to specify, by code, those
painting and lubricating, be defined separately,
tools and test equipment required to perform the
they may be so listed.
4. Adjust. To rectify to the extent neces-
e. Column 5, Remarks. Self-explanatory.
sary to bring into proper operating range.
5. Align. To adjust specified variable ele-
ments of an item to bring to optimum performance.
a. A maintenance function assigned to a main-
tenance level, which for any reason is beyond its
6. Install. To set up for use in an opera-
capability, becomes the responsibility of the next
tional environment such as an emplacement, site,
higher maintenance level.
7. Replace. To replace unserviceable items
b. The authority to perform a maintenance
function does not constitute authority to requisition
with serviceable assemblies, subassemblies, or
or otherwise secure necessary repair parts as
specified in current supply directives.
8. Repair. To restore an item to service-
able condition. This includes, but is not limited
a. Normally, there will be no deviations from
to, inspection, cleaning, preserving, adjusting,
the assigned maintenance level. In cases of
replacing, welding, riveting, and strengthening.