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TM 10-4320-256-14&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 various
maintenance levels.
b. The Maintenance Allocation Chart (MAC) in Section II designates overall authority and responsibility for the
Performance of maintenance functions on the pump assembly. 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.
c. Section Ill lists the tools and test equipment (both special tools and common tool sets) required for each
maintenance function as referenced from Section Il.
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 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., clean (includes
decontamination, when required), to preserve, to drain, to paint, or to replenish fuel, lubricants, chemical fluids,
compressed air, 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. Aline. To adjust specific variable elements of an item to bring about optimum or desired performance.
f. Calibrate. To determine and cause corrections to be made or to be adjusted on instruments or test,
measuring, 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 instqall the sme item when required to perform service or other
maintenance functions. Install my 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 or system.
B-1
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