MAINTENANCE ALLOCATION CHART
(5) Align. To adjust specified variable
a. This section provides a general explanation of
elements of an item to bring about optimum or desired
all maintenance and repair functions authorized at
To determine and cause
various maintenance levels.
b. Section II designates overall responsibility for
corrections to be made or to be adjusted on instruments
or test measuring and diagnostic equipments used in
the performance of maintenance functions on the
precision measurement. Consists of comparison of two
identified end item or component and the work
instruments, one of which is a certified standard of
measurement time required to perform the functions by
known accuracy, to detect and adjust any discrepancy in
the designated maintenance level. The implementation
the accuracy of the instrument being compared.
of the maintenance functions upon the end item or
(7) Install. The act of emplacing, seating, or
component will be consistent with the assigned
fixing into position an item, part or module (component
c. Section III lists the tools and test equipment
or assembly) in a manner to allow the proper functioning
of an equipment or system.
required for each maintenance function as referenced
The act of substituting a
from Section II.
serviceable like type part, sub-assembly, or module
Explanation Of Columns In Section II
(component or assembly) for an unserviceable
a. Column (1), Group Number. Column (1) lists
(9) Repair. The application of maintenance
group numbers to identify related components,
services (inspect, test, service, adjust, align, calibrate,
assemblies, sub-assemblies, and modules with their
or replace) or other maintenance Actions (welding,
next higher assembly. The applicable groups are listed
grinding, riveting, straightening, facing, remachining or
in the MAC in disassembly sequence beginning with the
resurfacing) to restore serviceability to an item by
first group removed.
correcting specific damage, fault, malfunction, or failure
in a part, sub-assembly, module (component or
column contains the noun names of components,
assemblies, sub-assemblies and modules for which
assembly), end item, or system.
maintenance is authorized.
That maintenance effort
c. Column (3), Maintenance Functions.
(service/action) necessary to restore an item to a
column lists the functions to be performed on the item
prescribed by maintenance standards (i.e., DMWR) in
listed in Column (2). The maintenance functions are
appropriate technical publications. Overhaul is normally
defined as follows:
(1) Inspect. To determine serviceability of an
the highest degree of maintenance performed by the
Army. Overhaul does not normally return an item to like
item by comparing its physical, mechanical, and/or
electrical characteristics with established standards
(2) Test. To verify serviceability and detect
unserviceable equipment to a like new condition in
incipient failure by measuring the mechanical or
accordance with original manufacturing standards.
electrical characteristics of an item and comparing those
Rebuild is the highest degree of materiel maintenance
characteristics with prescribed standards.
(3) Service. Operations required periodically
applied to Army equipment. The rebuild operation
includes the act of returning to zero those age
to keep an item in proper operating condition, i.e., to
measurements (hours/miles, etc.) considered in
clean (decontaminated), to preserve, to drain, to paint,
classifying Army equipment/components.
or to replenish fuel, lubricants, hydraulic fluids, or
d. Column (4), Maintenance Category.
compressed air supplies.
(4) Adjust. To maintain within prescribed
column is made up on sub-columns for each category of
maintenance. Work time figures are listed in these sub-
limits, by bringing into proper or exact position, or by
columns for the lowest level of maintenance authorized
setting the operating characteristics to specified
to perform the function