Section I. INTRODUCTION
1. General
pearance, performance, and life
expectancy. This is accom-
a. This appendix assigns maintenance
plished through the maintenance
functions and repair operations to be per-
formed by the lowest appropriate mainten-
technique of complete disassem-
bly of the item, inspection of all
ance echelon.
parts or components, repair or
b. Columns in the maintenance alloca-
replacement of worn or unserv-
tion chart are as follows:
iceable elements using original
(1) Part or component. This column
manufacturing tolerances and/or
shows only the nomenclature or
specifications and subsequent
standard item name. Additional
reassembly of the item.
descriptive data are included only
(g) Repair. To restore an item to
where clarification is necessary to
identify the part. Components and
serviceable condition through
correction of a specific failure or
parts Comprising a major end item
unserviceable condition. This
are listed alphabetically. Assem-
function inc1udes but is not
blies and subassemblies are in
limited to, inspecting, cleaning,
alphabetical sequence with their
preserving, adjusting, replacing,
components listed alphabetically
welding, riveting, and straight-
immediately below the assembly
ening.
listing.
(2) Maintenance function. This column
(3) 1st, 2d, 3d, 4th, 5th echelon. The
indicates the various maintenance
symbol X indicates the echelon
functions allocated to the echelon
responsible for performing that
capable of performing the oper-
particular maintenance operation,
ations.
but does not necessarily indicate
(a) Service. To clean, to preserve,
that repair parts will be stocked at
and to replenish fuel and lubri-
that level. Echelons higher than
cants.
the echelon marked by X are au-
(b) Adjust. To regulate periodically
thorized to perform the indicated
to prevent malfunction.
operation.
(c) Inspect. TO verify serviceability
and to detect incipient electrical
(4) Tools required. This column in-
or mechanical failure by scru-
dicates codes assigned to each in-
tiny.
dividual tool equipment, test equip-
(d) Test. T O verify serviceability
ment, and maintenance equipment
and to detect incipient electrical
referenced. The grouping of codes
or mechanical failure by use of
in this column of the maintenance
special equipment such as gages,
allocation chart indicates the tool,
meters, etc.
test, and maintenance equipment
(e) Replace. TO substitute service-
required to perform the mainte-
able assemblies, subassemblies
nance function.
and parts for unserviceable com-
(5) Remarks. Entries in this column
ponents .
will be utilized when necessary to
(f) Rebuild. To restore an item to a
clarify any of the data cited in the
standard as near as possible to
preceding columns.
original or new condition in ap-