TM 5-2090-202-12&P
TM 2090-12&P/1A
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 responsibility for the performance of
maintenance functions on the identified end item or component and the work measurement time required to perform the
functions by the designated maintenance level. 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
d. Section IV contains supplemental instructions and explanatory notes for a particular maintenance function.
B-2. MAINTENANCE FUNCTIONS
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 and detect incipient failure 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
(decontaminate), to preserve, to drain, to paint, or to replenish fuel, lubricants, hydraulic fluids or compressed air
supplies.
d. Adjust. To maintain, 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 about optimum or desired performance.
B-1
