LAUNDRY ADVANCED SYSTEM
MAINTENANCE ALLOCATION CHART (MAC)
The Army Maintenance System MAC
This introduction provides a general explanation of all maintenance and repair functions authorized at various
maintenance levels under the standard Army Maintenance System concept.
The MAC (immediately following the introduction) designates overall 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
levels, which are shown in column (4) as:
Unit -- includes two subcolumns, C (operator/crew) and O (unit) maintenance.
Direct Support -- includes and F subcolumn.
General Support -- includes an H subcolumn.
Depot -- includes a D subcolumn
The tools and test equipment requirements (immediately following the MAC) lists the tools and test equipment (both
special tools and common tool sets) required for each maintenance function as referenced in the MAC.
The remarks (immediately following the tools and test equipment requirements) contain supplemental instructions and
explanatory notes for a particular maintenance function.
Maintenance functions will be limited to and defined as follows:
1. 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). This includes
scheduled inspection and gagings.
2. Test. To verify serviceability by measuring the mechanical, pneumatic, hydraulic, or electrical characteristics of an
item and comparing those characteristics with prescribed standards on a scheduled basis.
3. Service. Operations required periodically to keep an item in proper operating condition, e.g., to clean (includes
decontaminate, when required), to preserve, to drain, to paint, or to replenish fuel, lubricants, chemical fluids, or
4. Adjust. To maintain or regulate, within prescribed limits, by bringing into proper or exact position, or by setting the
operating characteristics to specified parameters.
5. Align. To adjust specified variable elements of an item to bring about optimum or desired performance.
6. 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.
7. 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 or system.