APPENDIX A. MAINTENANCE ALLOCATION CHART - TM-9-4931-381-14-P-10089

TM 9-4931-381-14&P-1

APPENDIX A

MAINTENANCE ALLOCATION CHART

Section I. INTRODUCTION

A - 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) section II designates overall authority

and responsibility for the performance of maintenance functions on the TSTS. Application of

the maintenance functions will be consistent with the capacities and capabilities of the

designated maintenance categories.

c. Section Ill Iists the tools and test equipment required for each maintenance function

as referenced from section Il.

d. Section lV contains supplemental instructions and explanatory notes for a particular

maintenance function.

A-2. Maintenance Functions. Maintenance functions wil lbe Iimited 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 to specified parameters.

e. Align. To adjust specified variable elements of an item to bring about optimum or

desired performance.

Calibrate. To determine and cause corrections to be made or to be adjusted on

instruments or test, treasuring, and diagnostic equipments 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 instalI the same item when required to perform

service or maintenance functions. Install may be the act of emplacing, seating, or fixing into

posit ion a spare, repair part, or module (component or assernbly) in a manner to allow the

proper functioning of an equipment or system.

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