MAINTENANCE ALLOCATION
Section I. INTRODUCTION
ponents, assemblies, or subassem-
A3-1. General
blies.
a. This appendix assigns maintenance func-
( f ) Repair. To restore an item to serv-
tions to be performed on components, assem-
iceable c o n d i t i o n through correc-
blies, and subassemblies by the lowest appro-
tion of a specific failure or unserv-
priate maintenance category.
iceable condition. This function in-
b. Columns in the maintenance allocation
cludes but is not limited to welding,
chart are as follows:
g r i n d i n g , riveting, straightening,
and replacement of parts other
(1) Part or component. T h i s c o l u m n
t h a n the trial and error replace-
shows only the nomenclature or stand-
ment of running spare type items
ard item name. Additional descriptive
data are included only where clarifica-
s u c h as fuses, lamps, or electron
tion is necessary to identify the com-
tubes.
ponent. Components, assemblies, and
( g ) Align. To adjust two or more com-
subassemblies are listed in top-down
ponents of an electrical system so
order. That is, the assemblies which
t h a t their functions are properly
are part of a component are listed im-
synchronized.
mediately below that component, and
( h ) Calibrate. To determine, check, or
subassemblies which are part of an as-
rectify the graduation of an in-
sembly are listed immediately below
strument, weapon, or weapons sys-
that assembly. Each generation break-
t e m , or components of a weapons
down (components, assemblies, or sub-
system.
assemblies) is listed in disassembly or-
( i ) O v e r h a u l . To restore an item to
der or alphabetical order.
completely serviceable condition as
(2) Maintenance function. This column in-
prescribed by serviceability stand-
dicates the various maintenance func-
a r d s developed and published by
tions allocated to the categories.
h e a d s of technical services. This
i s accomplished through employ-
(a) Service. To clean, to preserve, and
ment of the technique of "Inspect
and Repair Only as Necessary"
(b) Adjust. To regulate periodically to
( I R O A N ) . Maximum utilization of
prevent malfunction.
d i a g n o s t i c and test equipment is
(c) Inspect. To verify serviceability and
combined with minimum disassemb-
d e t e c t incipient electrical or me-
bly of the item during the overhaul
chanical failure by scrutiny.
process.
( d ) Test. To verify serviceability and
( j ) R e b u i l d . To restore an item to a
to detect incipient electrical or me-
s t a n d a r d as near as possible to
chanical failure by use of special
original or new condition in appear-
equipment such as gages, meters,
ance, performance, a n d l i f e e x -
etc.
T h i s is accomplished
pectancy.
through the maintenance technique
(e) R e p l a c e . To substitute serviceable
of complete disassembly of the
components, assemblies, o r s u b -
item, inspection of all parts or com-
assemblies, for unserviceable com-
22