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TM 5-4120-259-15
APPENDIX II
MAINTENANCE ALLOCATION CHART
Section I. INTRODUCTION
1. General
a. Section I provides a general explanation
of all maintenance and repair funotions author-
ized at various maintenance levels.
b. Section II designates overall responsi-
bility for the performance of maintenance op-
erations on the identified end item or com-
ponent. The
i m p l e m e n t a t i o n o f t he
maintenance tasks upon the end item or com-
ponent will be consistent with the assigned
maintenance operations.
c. Section III lists the special tools and test
equipment required for each maintenance op-
eration as referenced from Section II.
d. Section IV contains supplemental in-
structions, explanatory notes and/or illustra-
tions required for a particular maintenance
function.
2. Explanation of Columns in Section II.
a. Functional Group Number. The func-
tional group is a numerical group set up on
a functional basis. The applicable functional
grouping indexes (obtained from TB 750-93-
1 Functional Grouping Codes) are listed on
the Maintenance Assignment in the appro-
priate numerical sequence. These indexes are
normally set up in accordance with their func-
tion and proximity to each other.
b. Component
Assembly
Nomenclature.
This column contains a brief description of the
components of each functional group.
c. Maintenance Operations and Mainte-
nance Levels. This column lists the various
maintenance operations (“A” through
and indicates the lowest maintenance
authorized to perform these operations.
level
The
symbol designations for the various mainte-
nance levels are as follows:
O/C-0perator or crew
O
-Organization maintenance
F
-Direct support maintenance
H
-General support maintenance
D
-Depot maintenance
The Maintenance Operations are
follows:
defined as
A-SERVICE: Operations required period-
ically to keep the itern in proper oper-
ating condition, i.e., to clean, preserve,
drain, paint, and replenish fuel, lubri-
cants, hydraulic, and deicing fluids, or
compressed air supplies.
B-ADJUST: Regulate periodically to pre-
vent mzdf unction. Adjustments will be
made commensurate with adjustment
procedures and associated equipment
specifications.
C-ALINE: Adjust two or more compo-
nents of an electrical or mechanical
system so that their functions are prop-
erly synchronized or adjusted.
D-CALIBRATE: Determine,
check, or
rectify the graduation of an instru-
ment, weapon, or weapons system or
components of a weapons system.
E-INSPECT: Verify serviceability and de-
tect incipient electrical or mechanical
failure by close visual examination.
F-TEST: Verify serviceability and detect
incipient electrical or mechanical fail-
ure by measuring the mechanical or
electrical characteristics of the item and
comparing those characteristics with
authorized standards. Tests will be
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