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Page Title:
APPENDIX III. MAINTENANCE ALLOCATION CHART |
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 TM 5-4320-237-15
MAINTENANCE ALLOCATION CHART
Section I. INTRODUCTION
symbol designations for the various mainte-
1. General
nance categories are as follows:
a. This section provides a general explana-
tion of all maintenance and repair functions
C-Operator or crew
authorized at various maintenance levels.
O-Organizational maintenance
b. Section II designates overall responsibil-
F--Direct support maintenance
ity for the performance of maintenance opera-
H--General support maintenance
tions on the identified end item or component.
D-Depot maintenance
The implementation of the maintenance
The maintenance functions are defined as fol-
tasks upon the end item or component will
lows:
be consistent with the assigned maintenance
operations.
A--Inspect: Verify serviceability and detect
c. Section III lists the special tools and test
incipient electrical or mechanical failure
equipment required for each maintenance op-
by close visual examination.
eration as referenced from section II.
B-Test: Verify serviceability and detect in-
d. Section IV contains supplemental in-
cipient electrical or mechanical failure by
structions, explanatory notes and/or illustra-
measuring the mechanical or electrical
tions required for a particular maintenance
characteristics of the item and compar-
function.
ing those characteristics with authorized
standards. Tests will be made commen-
surate with test procedures and with
2. Explanation of Columns in Section II
calibrated tools and/or test equipment
a. Functional Group Number. The func-
referenced in the MAC.
tional group is a numerical group set up on a
C-Service: Operations required periodically
functional basis. The applicable functional
to keep the item in proper operating con-
grouping indexes (obtained from TB 750-93
dition, i.e., to clean, preserve, drain,
1, Functional Grouping Codes) are listed on
paint, and replenish fuel, lubricants,
the MAC (Maintenance Allocation Chart) in
hydraulic, and deicing fluids, or com-
the appropriate numerical sequence. These in-
pressed air supplies.
dexes are normally set up in accordance with
their function and proximity to each other.
D--Adjust: Regulate periodically to prevent
malfunction Adjustments will be made
b. Component Assembly Nomenclature.
commensurates with adjustment proce-
This column contains a brief description of the
dures and associated equipment adjust-
components of each functional group.
ment specifications.
c. Maintenance Functions and Maintenance
E--Align: Adjust two or more componds
Categories. This column lists the various
of an electrical or mechanical system so
maintenance functions (A through K) and in-
that their functions are properly syn-
dicates the lowest maintenance category au-
thorized to perform these operations. The
chronized or adjusted.
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