TM 9-4520-258-14
APPENDIX B
MAINTENANCE ALLOCATION CHART
Section I. INTRODUCTION
B-1.
GENERAL.
a.
This section provides a general explanation of all maintenance and repair function authorized at various
maintenance levels under the standard Army Maintenance System concept.
b.
The Maintenance Allocation Chart (MAC) in Section II designates overall authority and responsibility for
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.
General Support includes an H subcolumn.
Depot includes a D subcolumn.
c.
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.
d.
Section IV contains supplemental instructions and explanatory notes for a particular maintenance function.
B-2.
MAINTENANCE FUNCTIONS.
Maintenance functions will be limited to and are defined as follows:
a.
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.
Test. To verify serviceability by measuring the mechanical, pneumatic, hydraulic, or electrical
characteristics of an item and comparing those characteristics with prescribed standards.
c.
Service. Operations required periodically to keep an item in proper operating condition, i.e., to clean
(includes decontaminate, when required), to preserve, to drain, to paint, or to replenish fuel, lubricants,
chemical fluids, or gases.
d.
Adjust. To maintain or regulate, within prescribed limits, by bringing into proper position, or by setting the
operating characteristics to specified parameters.
e.
Align. To adjust specified variable elements of an item to bring about optimum or desired performance.
B-1
