TM 9-4120-403-14
APPENDIX B
MAINTENANCE ALLOCATION CHART
Section I INTRODUCTION
B-1. GENERAL
a.
This section provides a general explanation of all maintenance and repair functions authorized at various
maintenance categories.
b.
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 capacities and capabilities of the designated maintenance
categories.
c.
Section III lists the tools and test equipment (both special tools and common tool sets) required for each
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 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 or exact position, or by
setting the operating characteristics specified parameters.
e.
Aline. To adjust specified variable elements of an item to bring about optimum or desired performance.
B-1