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TM 5-4210-218-13&P
APPENDIX B
MAINTENANCE ALLOCATION CHART
SECTION I. INTRODUCTION
B-1
THE ARMY MAINTENANCE SYSTEM MAC.
B. 1.1
This introduction (section I) provides a general explanation of all maintenance and repair functions authorized at
various maintenance levels under the standard Army Maintenance System concept.
B-1.2
The Maintenance Allocation Chart (MAC) in section II designates overall authority and responsibility for the
performance of maintenance functions on the identified end item or component. The application of the maintenance
functions to the end item or component will be consistent with the capacities and capabilities of the designated
maintenance levels, which are shown on the MAC in column (4) as:
Unit - includes two subcolumns, C (operator/crew) and O (unit) maintenance.
Direct Support - includes an F subcolumn.
B-1.3
Section III lists the tools and test equipment (both special tools and common tool sets) required for each
maintenance function as referenced from section II.
B-1.4
Section IV contains supplemental instructions and explanatory notes for a particular maintenance function.
B-2
Maintenance Functions. Maintenance functions are limited to and defined as follows:
B-2.1
Inspect. To determine the serviceability of an item by comparing its physical, mechanical, and/or electrical
characteristics with established standards through examination (e.g., by sight, sound, or feel).
B-2.2
Test. To verify serviceability by measuring the mechanical, pneumatic, hydraulic, or electrical characteristics of
an item/end item and comparing those characteristics with prescribed standards.
B-2.3
Service. Operations required periodically to keep an item in proper operating condition; e.g., to clean (includes
decontaminate, when required), to preserve, to drain, to paint, or to replenish fuel, lubricants, chemical fluids, or gases.
a.
This section provides a general explanation of all maintenance and repair functions authorized at various
maintenance levels.
b.
Section II designates overall responsibility for the performance of maintenance functions on the identified end
item or component and the work measurement time required to perform the functions by the designated maintenance
level. The implementation of the maintenance functions upon the end item or component will be consistent with the
assigned maintenance functions.
B-1
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