TM 10-8340-227-13&PAPPENDIX BMAINTENANCE ALLOCATION CHART (MAC)SECTION IINTRODUCTIONB-1. The Army Maintenance System MACa. This introduction (Section I) provides a general explanation of all maintenance and repair functions authorizedat various maintenance levels under the Standard Army Maintenance System concept.b. The Maintenance Allocation Chart (MAC) in Section II designates overall authority and responsibility for theperformance of maintenance functions on the identified end item or component. The application of the maintenancefunctions to the end item or component will be consistent with the capacities and capabilities of the designatedmaintenance levels, which are shown on the MAC in column (4) as:Unit - includes two subcolumns, C (operator/crew) and 0 (unit) maintenance.Direct Support - includes an F subcolumn.General Support - includes an H subcolumn.Depot - includes a D subcolumn.c. Section III lists the tools and test equipment (both special tools and common tool sets) required for eachmaintenance 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 are limited to and defined as follows:a. Inspect. To determine the serviceability of an item by comparing its physical, mechanical and/or electricalcharacteristics 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 ofan item and comparing those characteristics with prescribed standards.c. Service. Operations required periodically to keep an item in proper operating condition: e.g. to clean (includesdecontaminate, when required), to preserve, to drain, to paint, or to replenish fuel, lubricants, chemical fluids, or gases.B-1
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