B-2 Change 1
B-2. MAINTENANCE FUNCTIONS (Continued)
i. Repair. The application of maintenance services including fault location troubleshooting, removal/installation,
disassembly/assembly procedures and maintenance actions to identify troubles and 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. The maintenance effort (service/action) prescribed to restore an item to a completely
serviceable/operational condition as required by maintenance standards in appropriate technical manuals (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 equipment to
like-new condition in accordance with original manufacturing standards. Rebuild is the highest degree of material
maintenance applied to Army equipment. The rebuild operation includes the act of returning to zero those age
measurements (e.g., hours/miles) considered in classifying Army equipment/components.
B-3. MAINTENANCE ALLOCATION CHART
An explanation of the column entries is as follows:
a. GROUP NUMBER. This column lists group numbers (or functional group codes) the purpose of which is to
identify components, assemblies, subassemblies and modules within the next higher assembly.
b. COMPONENT/ASSEMBLY. This column contains the name or nomenclature of components, assemblies,
subassemblies and modules for which maintenance is authorized. Throwaway items such as lamps, tubes, resistors,
modules, cards and like items are not considered repairable and therefore are not listed. However, a listing of such
items in the Repair Parts and Special Tools Lists (RPST) in Appendix C gives automatic authorization to replace such
items at the lowest level of maintenance.
c. MAINTENANCE FUNCTION. This column lists the maintenance functions to be performed on the items listed in
Column 2. When items are listed without maintenance functions it is solely for the purpose of having the group
numbers in the MAC and RPSTL coincide.
d. MAINTENANCE LEVEL. This column specifies, by the listing of a "worktime" 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 level of maintenance. If the
number or complexity of the tasks within the listed maintenance function vary at different maintenance levels,
appropriate "worktime" figures will be shown for each level. The number of task-hours specified by the "worktime"
figures will be shown for each level. The number of task-hours specified by the "worktime" 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, troubleshooting
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 Column 3. The subcolumns of Column 4 are as follows:
C = Operator/Crew
F = Direct Support
H = General Support
D = Depot
O = Organizational