MAINTENANCE ALLOCATION CHART
Section I. INTRODUCTION
This Maintenance Allocation Chart designates responsibility for performance of Maintenance functions to
specific Maintenance categories.
D-2. Maintenance Functions
a. Inspect: To determine the serviceability of an item by comparing its physical, mechanical and/or
electrical characteristics with established standards through examination.
b. Test: To verify serviceability and detect incipient failures by measuring the mechanical or electrical
characteristics of an item and comparing those characteristics with prescribed standards.
c. Service: Operations required periodically to keep an item in proper operating condition, i.e., to clean
(decontaminate), to preserve, to drain, to paint, or to replenish fuel, lubricants, hydraulic fluids, or compressed
d. Adjust: To maintain, within prescribed limits, by bringing into proper or exact position, or by setting the
operating characteristics to specified parameters.
e. Align: To adjust specified variable elements of an item to bring about optimum or desired performance.
f. Calibrate: To determine and cause corrections to be made or to be adjusted on instruments or test
measuring and diagnostic equipment used in precision measurement. Consists of comparisons of two
instruments, one of which is a certified standard of known accuracy, to detect and adjust any discrepancy in the
accuracy of the, instrument being compared.
g. Install: 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 an equipment or system;
h. Replace: The act of substituting a serviceable like type part, subassembly, or module (component or
assembly) for an unserviceable counterpart.
i. Repair: The application of maintenance services 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 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 equipments/components.
D-3. Column entries
Columns used in the Maintenance allocation chart 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
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 the tasks within the listed maintenance function vary
at different maintenance categories, appropriate "work time" figures will be shown for each category. The
number of manhours specified by 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