TM 9-2330-267-14&PB-2. MAINTENANCE FUNCTIONS (Con’t).j.Overhaul.That maintenance effort (service/action) prescribed to restore an item to a completely service-able/operational condition as required by maintenance standards in appropriate technical publications (i.e.,DMWR). Overhaul is normally the highest degree of maintenance performed by the Army. Overhaul does not nor-mally return an item to like new condition.k. Rebuild. Consists of those services/actions necessary for the restoration of unserviceable equipment toa like new condition in accordance with original manufacturing standards. Rebuild is the highest degree of materielmaintenance applied to Army equipment. The rebuild operation includes the act of returning to zero those age meas-urements (hours/miles, etc.) considered in classifying Army equipment/components.B-3. EXPLANATION OF COLUMNS IN THE MAC, SECTION Il.a. Column 1, Group Number. Column 1 lists functional group code numbers, the purpose of which is toidentify maintenance signifcant components, assemblies, subassemblies, and modules with the next higher as-sembly. End item group number shall be “00.”b. Column 2, Component/Assembly. Column 2 contains the names of components, assemblies, subas-semblies, and modules for which maintenance is authorized.c. Column 3, Maintenance Function. Column 3 lists the functions to be performed on the item listed in Col-umn 2. (For a detailed explanation of these functions, refer to paragraph B-2.)d. Column 4, Maintenance Level. Column 4 specifies, by the listing of a work time figure in the appropriatesubcolumn(s), the level of maintenance authorized to perform the function listed in Column 3. This figure representsthe active time required to perform that maintenance function at the indicated level of maintenance. If the number orcomplexity of the tasks within the listed maintenance function vary at different maintenance levels, appropriate worktime figures will be shown for each level. The work time figure represents the average time required to restore an item(assembly, subassembly, component, module, end item, or system) to a serviceable condition under typical fieldoperating conditions. This time includes preparation time (including any necessary disassembly/assembly time),troubleshooting/fault location time, and quality assurance/quality control time in addition to the time required to per-form the specific tasks identified for the maintenance functions authorized in the Maintenance Allocation Chart. Thesymbol designations for the various maintenance levels are as follows:C . . . . Operator/CrewO. . . . Organizational MaintenanceF. . . . . Direct Support MaintenanceH. . . . General Support MaintenanceD. . . . . Depot Maintenancee. Column 5, Tools and Equipment. Column 5 specifies, by code, those common tool sets (not individualtools) and special tools, TMDE, and support equipment required to perform the designated function.f. Column 6, Remarks. This column shall, when applicable, contain a letter code, in alphabetical order,which shall be keyed to the remarks contained in Section IV,B-4. EXPLANATION OF COLUMNS IN TOOL AND TEST EQUIPMENT REQUIREMENTS,SECTION Ill.a. Column 1, Tool or Test Equipment Reference Code. The tool and test equipment reference code cor-relates with a code used in the MAC , Section II, Column 5.b. Column 2, Maintenance Level. The lowest level of maintenance authorized to use the tool or test equip-ment.c. Column 3, Nomenclature. Name or identification of the tool or test equipment.B-2
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