MAINTENANCE ALLOCATION CHART
a. This section provides a general explanation
of all maintenance and repair functions author-
ized at various maintenance levels.
b. Section II designates overall responsibility
for the performance of maintenance functions on
the identified end item or component and the
work measurement time required to perform the
functions by the designated maintenance level.
The implementation of the maintenance functions
upon the end item or component will be consistent
with the assigned maintenance functions.
c. Section III lists the tools and test equipment
required for each maintenance function as refer-
enced from Section II.
C-2. Explanation of Columns in Section II
a. Column (l), Group Number. Column 1 lists
group numbers to identify related components,
assemblies, subassemblies, and modules with their
next higher assembly. The applicable groups are
listed in the MAC in disassembly sequence begin-
ning with the first group removed.
b. Column (.2), ComponentlAssembly. This col-
umn contains the noun names of components,
assemblies, subassemblies and modules for which
maintenance is authorized.
c. Column (3), Maintenance Functions. This col-
umn lists the functions to be performed on the
item listed in Column 2. The maintenance func-
tions are defined as follows:
(1) Inspect. To determine serviceability of an
item by comparing its physical, mechanical, and/or
electrical characteristics with established stand-
ards through examination.
(2) Test. To verify serviceability and detect
incipient failure by measuring the mechanical or
electrical characteristics of an item and compar-
ing those characteristics with prescribed stand-
(3) 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 air supplies.
(4) Adjust. To maintain within prescribed lim-
its, by bringing into proper or exact position, or by
setting the operating characteristics to specified
(5) Align. To adjust specified variable ele-
ments of an item to bring about optimum or
(6) Calibrate. To determine and cause correc-
tions to be made or to be adjusted on instruments
or test measuring and diagnostic equipments used
in precision measurement. Consists of comparison
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
(7) Install. The act of emplacing, seating, or
fixing into position an item, part, or module (com-
ponent or assembly) in a manner to allow the
proper functioning of an equipment or system.
(8) Replace. The act of substituting a service-
able like type part, subassembly, or module (com-
ponent or assembly) for an unserviceable counter-
(9) Repair. The application of maintenance
services (inspect, test, service, adjust, align, cali-
brate, or replace) or other maintenance actions
(welding, grinding, riveting, straightening, facing,
remachining or resurfacing) to restore serviceabil-
ity to an item by correcting specific damage, fault,
malfunction, or failure in a part, subassembly,
module (component or assembly), end item, or
(10) Overhaul. That maintenance effort (serv-
ice/action) necessary to restore an item to a com-