B-3. EXPLANATION OF COLUMNS IN THE MAC, SECTION II

B-4. EXPLANATION OF COLUMNS IN TOOL AND TEST EQUIPMENT REQUIREMENTS, SECTION III.

/.25ton/TM-9-2320-289-20 CUCV Series Trucks at Unit level Manual
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TM 9-2320-289-20 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 third position code of the SMR code, i. Repair. The application of maintenance services, including fault location/trouble- shooting, removal/installation, and disassembly/assemble procedures, and maintenance actions to identify^-troubles and restore serviceability to malfunction, or failure in a part, subassembly, system. j. Overhaul. That maintenance effort completely serviceable/operational condition as technical publications (i.e., DMWR). Overhaul an item by correcting specific damage, fault, module (component or assembly), end item, or (service/action) prescribed to restore an item to a required by maintenance standards in appropriate is normally the highest degree of maintenance performed by the Army. Overhaul does not normally return an item to like new condition. k. R e b u i l d . Consists of those services/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 COLUMNS IN THE MAC, SECTION II. a. Column 1, Group Number. Column 1 lists functional group code numbers, the purpose of which is to identify maintenance significant components, assemblies, subassemblies, and modules with the next higher 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 item listed in Column 2. (For a detailed explanation of these functions, see paragraph B-2.) d. Column 4, Maintenance Level. Column 4 specifies, by the listing of a work time figure in the appropriate 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 level of maintenance. If the number or complexity of the tasks within the listed maintenance function vary at different maintenance levels, appropriate work time 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 field operating 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 perform the specific tasks identified for the maintenance functions authorized in the Maintenance Allocation Chart. The symbol designations for the various maintenance levels are as follows: C ... . . .. . . . . . Unit (Operator or Crew) O . . . . . . . . . . . . . . . . . Unit Organizational Maintenance F . .... . . . . . . . . . Intermediate Direct Support Maintenance H . . . . . . . . . . . Intermediate General Support Maintenance D . . . . . .. . . . . Depot Maintenance e. Column 5, Tools and Equipment. Column 5 specifies, by code, those common tool sets (not individual tools) and special tools, TMDE, and support equipment required to perform the designated function. f. Column 6, Remarks. This column shall, alphabetic order, which shall be keyed to the remarks B-2 when applicable, contain a letter code, in contained in Section IV.

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