TM 10-8110-202-13 & Ph. Replace. To remove an unserviceable item and install a serviceable counterpart in its place. “Re-place” is authorized by the MAC and is shown as the 3d position code of the SMR code.i.Repair. The application of maintenance services, including fault location/troubleshooting, removal/installation, and disassembly/assembly procedures, and maintenance actions to identify troubles andrestore serviceability to an item by correcting specific damage, fault, malfunction, or failure in a part,subassembly, module (component or assembly), end item, or system.j. Overhaul. That maintenance effort (service/action) prescribed to restore an item to a completelyserviceable/operational condition as required by maintenance standards in appropriate technical publica-tions (i.e., DMWR). Overhaul is normally the highest degree of maintenance performed by the Army.Overhaul does not normally return an item to like new condition.k. Rebuild. Consists of those services/actions necessary for the restoration of unserviceable equipmentto a like new condition in accordance with original manufacturing standards. Rebuild is the highest degreeof materiel maintenance applied to Army equipment. The rebuild operation includes the act of returning tozero those age measurements (hours/miles, etc. ) considered in classifying Army equipment/components.B-3. EXPLANATION OF COLUMNS IN THE MAC, SECTION IIa. Column (1) - Group Number. Column 1 lists functional group code numbers, the purpose of whichis to identify maintenance significant components, assemblies, subassemblies, and modules with the nexthigher assembly. End item group number shall be 00.b. Column (2) - Component/Assembly. Column 2 contains the names of components, assemblies,subassemblies, and modules for which maintenance is authorized.c. Column (3) - Maintenance Function. Column 3 lists the functions to be performed on the itemlisted in Column 2. (For detailed explanation of these functions, see paragraph B-2.)d. Column (4) - Maintenance Category. Column 4 specifies, by the listing of a work time figure in theappropriate subcolumn(s), the category of maintenance authorized to perform the function listed in Col-umn 3, This figure represents the active time required to perform that maintenance function at theindicated category of maintenance. If the number or complexity of the tasks within the listed maintenancefunction vary at different maintenance categories, appropriate work time figures will be shown for eachcategory. The work time figure represents the average time required to restore an item (assembly, sub-assembly, component, module, end item, or system) to a serviceable condition under typical field operatingconditions. 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 timerequired to perform the specific tasks identified for the maintenance functions authorized in themaintenance allocation chart. The symbol designations for the various maintenance categories are asfollows:C . . . . . . . . . . . . . . .Operator or crewO . . . . . . . . . . . . . . .Organizational MaintenanceF . . . . . . . . . . . . . . .Direct Support MaintenanceH . . . . . . . . . . . . . . .General Support MaintenanceD . . . . . . . . . . . . . . .Depot MaintenanceB-2
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