TM-9-2350-311-20-1 Maintenance Manual for Volume 1 M109 Hull Download
Page 1118 of 1275
TM 9-2350-311-20-1 the act of emplacing, seating, or fixing into position an item, part, or module (component or assembly) in a manner to allow the proper functioning of the equipment or system. h. Replace The act of substituting of a serviceable like-type part, subassembly, or module (component or assembly) for an unserviceable counterpart. i. Repair The application of maintenance service or other maintenance actions to restore 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) necessary to restore an item to a completely serviceable/operational condition as prescribed by maintenance standards (i.e., DMWR) in appropriate technical publications. 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 service/actions necessary for the restoration of unserviceable equipment to a like-new condition in accordance with original manufacturing standards. Rebuild is the highest degree of materiel maintenance applied to Army equipment. The rebuild operation includes the act of returning to zero those age measurements (hours/miles, etc.) considered in classifying Army equipment/components. B-3 EXPLANATION OF COLUMN ENTRIES IN THE MAC Columns used in the MAC will be limited to those shown. Entries for these columns are explained below: a. Column 1 Group Number, Column 1 lists group numbers, the purpose of which is to identify components, assemblies, subassemblies, and modules with the next higher assembly. b. Column 2 Component./Assembly, Column 2 contains the noun names of components, assemblies, subassemblies, and modules for which maintenance is authorized. c. Column 3 Maintenance Functions, Column 3 lists the functions to be performed on the item listed in Column 2. d. Column 4 Maintenance Category, Column 4 specifies, by the listing of a “work time” figure in the appropriate subcolumn(s), the lowest 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 category of maintenance. if the number or complexity of B-3