TM 10-4320-346-12&Pf.Calibrate.To determine and cause corrections to be made or to be adjusted on instruments or test,measuring, and diagnostic equipments used in precision measurement. Consists of comparisons oftwo instruments, one of which is a certified standard of known accuracy, to detect and adjust anydiscrepancy in the accuracy of the instrument being compared.g.Remove/Install.To remove and install the same item when required to perform service or othermaintenance 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 anequipment or system.h.Replace.To remove an unserviceable item and install a serviceable counterpart in its place."Replace" is authorized by the MAC and is shown as the 3rd position code of the SMR code.I.Repair.The application of maintenance services, including fault location/trouble-shooting,removal/installation, and disassembly/assembly procedures, and maintenance actions to identifytroubles and restore serviceability to an item by correcting specific damage, fault, malfunction, orfailure 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 technicalpublications (i.e., DMWR). Overhaul is normally the highest degree of maintenance performed bythe Army. Overhaul does not normally return an item to like new condition.k.Rebuild.Consists of those services/actions necessary for the restoration of unserviceableequipment to a like new condition in accordance with original manufacturing standards. Rebuild isthe highest degree of material maintenance applied to Army equipment. The rebuild operationincludes the act of returning to zero those age measurements (hours/miles, etc.) considered inclassifying Army equipment/components.B-3.EXPLANATION OF COLUMNS IN THE MAC, SECTION II.a.Column1,GroupNumber. Column 1 lists functional group code numbers, the purpose of which isto identify maintenance significant components, assemblies, subassemblies, and modules with thenext higher assembly. End item group number shall be "00."b. Column2,Component/Assembly. Column 2 contains the names of components, assemblies,subassemblies, and modules for which maintenance is authorized.c.Column3,MaintenanceFunction. Column 3 lists the functions to be performed on the item listedin Column 2. (For detailed explanation of these functions, see paragraph B-2.)dColumn4,MaintenanceCategory.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 inColumn 3. This figure represents the active time required to perform that maintenance function atthe indicated category of maintenance. If the number or complexity of the tasks within the listedB-2
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