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TM5-4210-229-14&P
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 the various
maintenance categories.
b.
The Maintenance Allocation Chart (MAC) in Section II designates over-all 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 categories.
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 defined as follows:
a.
Inspect. To determine the serviceability of an item by comparing its physical, mechanical and/or electrical
characteristics with established standard through examination (e.g., by sight, sound, or feel).
b.
Test. To verify serviceability by measuring the mechanical, pneumatic, hydraulic, or electrical characteristics with
prescribed standards.
c.
Service. Operations required periodically to keep an item in proper operating condition. i.e., to clean (includes
decontamination 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 to specified parameters.
e.
Align. To adjust specified variable elements of an item to bring about optimum performance.
f
Calibrate. To determine and cause corrections to be made or to be adjusted on instruments or test, measuring,
and diagnostic equipment used in precision measurement. Consists of comparisons of two instruments, one of
which is a certified standard of known accuracy, to detect and adjust any discrepancy in the accuracy of the
instrument being compared.
g.
Remove/Install. To remove and install the same item when required to perform service or other maintenance
functions. Install may be the act of emplacing, seating, or fixing into position a spare, repair part or module
(component or assembly) in a manner to allow the proper functioning of an equipment of system.
B-1
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