TM 11-6625-622-12
MAINTENANCE ALLOCATION
Section I. INTRODUCTION
assemblies, for unserviceable
A2-1. General
components, assemblies, or sub-
a. This appendix assigns maintenance
assemblies.
functions to be performed on components,
Repair. T o restore an item to
(f)
assemblies, and subassemblies by the lowest
serviceable condition through cor-
appropriate maintenance category.
rection of a specific failure or
b. Columns in the maintenance allocation
unserviceable condition, This func-
chart are as follows:
tion includes but is not limited
(1) Part or component. This column shows
to welding, grinding, riveting,
only the nomenclature or standard
straightening, and replacement of
item name. Additional descriptive data
parts other than the trial and error
are included only where clarification
replacement of running spare type
is necessary to identify the component.
items such as fuses, lamps, or elec-
Components, assemblies, and sub-
tron tubes.
assemblies are listed in top-down or-
Align. To adjust two or more com-
(g)
der. That is, the assemblies which are
ponents of an electrical system so
part of a component are listed imme-
that their functions are properly
diately below that component, and the
synchronized.
subassemblies which are part of an
(h)
Calibrate. To determine, check, or
assembly are listed immediately be-
rectify the graduation of an instru-
low that assembly. Each generation
ment, weapon, or weapons system,
breakdown (components, assemblies,
or components of a weapons system.
or subassemblies) is listed in dis-
Overhaul. To restore an item to
(i)
assembly order or alphabetical order.
completely serviceable condition as
(2) Maintenance function. This column
prescribed. by serviceability stand-
indicates the various maintenance
ards developed and published by
functions allocated to the categories.
heads of technical services. This is
(a) Service. To clean, to preserve, and
accomplished through employment
of the technique of "Inspect and Re-
(b) Adjust. To regulate periodically to
pair Only as Necessary" (IROAN).
prevent malfunction.
Maximum utilization of diagnostic
(c) Inspect. To verify serviceability and
and test equipment is combined with
to detect incipient electrical or me-
minimum disassembly of the item
chanical failure by scrutiny.
during the overhaul process.
(d) Test. To verify serviceability and to
Rebuild. To restore an item to a
(j)
detect incipient electrical or me-
standard as near as possible to
chanical failure by use of special
original or new condition in appear-
equipment such as gages, meters,
ance, performance, and life expect-
etc.
ancy. This is accomplished through
(e) Replace. TO substitute serviceable
the maintenance technique of com-
components, assemblies, or sub-
plete disassembly of the item, in-
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