TM 9-6115-659-13&PB-2.7 Remove/Install.To remove and install the same item when required to perform service or othermaintenance functions. Install may be the act of placing, seating, or fixing into position a spare, repairpart, or module (component or assembly) in a manner to allow the proper functioning of an equipment orsystem.B-2.8 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 3d position code of the SMR code.B-2.9 Repair.The application of maintenance services¹, including fault location/troubleshooting²,removal/installation, and disassembly/assembly³ procedures, and maintenance actions4 to identifytroubles and restore serviceability to an item by correcting specific damage, fault, malfunction, or failurein a part, subassembly, module (component or assembly), end item, or system.B-2.10 Overhaul.That maintenance. effort (service/action) prescribed to restore an item to a completelyserviceable/operational condition as required by maintenance standards in appropriate technicalpublication (i.e., DMWR). Overhaul does not normally return an item to like new condition.B-2.11 Rebuild.Consists of those services/actions necessary for the restoration of unserviceableequipment to a like new condition in accordance with original manufacturing standards. Rebuild is thehighest degree of materiel maintenance applied to Army equipment. The rebuild operation includes theact of returning to zero those age measurement (hour/miles, etc.) considered in classifying Army equip-ment/components.B-3 EXPLANATION OF COLUMNS IN THE MAC, SECTION II.B-3.1 Column1,GroupNumber.Column 1 lists functional group code numbers, the purpose of whichis to identifi maintenance significant components, assemblies, subassemblies, and modules with the nexthigher assembly. End item group number shall be “00.”B-3.2 Column 2, Component/Assembly. Column 2 contains the names of components, assemblies,subassemblies, and modules for which maintenance is authorized.B-3.3 Column3,MaintenanceFunction.Column 3 lists the functions to be performed on the itemlisted in Column 2. (For detailed explanation of these functions, see paragraph B-2.)B-3.4 Column4,MaintenanceLevel.Column 4 specifies, by the listing of a work time figure in theappropriate subcolumn(s), the level of maintenance authorized to perform the function listed in Column 3.This figure represents the active time required to perform that maintenance function at the indicated levelof maintenance. If the number or complexity of the tasks within the listed maintenance function vary atdifferent maintenance levels, appropriate work time figures will be shown for each level. The work timefigure represents the average time required to restore an item (assembly, subassembly, component,module, end item, or system) to a serviceable condition under typical field operating conditions. This timeincludes preparation time (including any necessary disassembly/assembly time), troubleshooting/fault¹Services- inspect, test,service,adjust,aline,calibrate,and/or replace.²Faultlocate/troubleshoot- The processof investigatinganddetectingthe causeof equipmentmalfunctioning;the act ofisolatinga faultwithin a systsm or unitunder test (UUT).³Disassemble/assemble - encompassesthe step-by-step tubingapart(or breakdown) of a spare functionalgroupcoded itemto the level of its leastcomponency identified as maintenance significant(i.e.,assigned an SMRcode) for the level of maintenanceunderconsideration.4Actions- welding, grinding,riveting,straightening, facing,remachinery, and/orresurfacing.B-2
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