TM 9-2330-383-14&P
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
responsibility for the performance of maintenance functions on the identified end
item or component. The implementation of the maintenance functions upon the end
item or component will be consistent with the assigned maintenance functions.
c. Section III lists the special tools and test equipment 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 standards
through examination.
b. Test. To verify serviceability by measuring the mechanical 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, within prescribed limits, by bringing into proper or
exact position or by setting the operating characteristics to specified parameters.
e. Aline. To adjust specified 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.