MAINTENANCE ALLOCATION CHART
Section I. INTRODUCTION
e. Align. To adjust specified variable ele-
ments of an item to bring about optimum
or desired performance.
a. This section provides a general explana-
tion of all maintenance and repair func-
tions authorized at various maintenance
f. Calibrate. To determine and cause cor-
rections to be made or to be adjusted on
instruments or test measuring and diag-
b. The Maintenance Allocation Chart (MAC)
nostic equipments used in precision
in Section I I designates overall respon-
measurement. Consists of comparisons
sibility for the performance of mainte-
of two instruments, one of which is a
nance functions on the identified end
certified standard of known accuracy, to
item or component. The implementation
detect and adjust any discrepancy in the
of the maintenance functions upon the
accuracy of the instrument being com-
end item or component will be consistent
with the assigned maintenance functions.
Install. The act of emplacing, seating, or
Section III lists the special tools and test
fixing into position an item, part, or
equipment required for each maintenance
module (component or assembly) in a
function as referenced from Section II.
manner to allow the proper functioning
of an equipment or system.
d. Section IV contains supplemental instruc-
tions on explanatory notes for a particu-
lar maintenance function.
h. Replace. The act of substituting a service-
able like type part, subassembly, or
E-2 Maintenance Functions.
module (component or assembly) for an
a. Inspect. To determine the serviceability
of an item by comparing its physical,
Repair. The application of maintenance
mechanical and/or electrical character-
services (inspect, test, service, adjust,
istics with established standards through
align, calibrate or replace) or other main-
tenance actions (welding, grinding,
riveting, straightening, facing, remachin-
b. Test. To verify serviceability and detect
ing or resurfacing) to restore serviceability
incipient failure by measuring the mecha-
to an item by correcting specific damage,
nical or electrical characteristics of an
fault, malfunction, or failure in a part,
item and comparing those characteristics
subassembly, module (component or
with prescribed standards.
assembly), end item, or system.
c. Service. Operations required periodically
j. Overhaul. That maintenance effort
to keep an item in proper operating con-
(services/actions) necessary to restore an
dition, i.e., to clean (decontaminate), to
item to a completely serviceable/opera
preserve, to drain, to paint, or to replenish
tional condition as prescribed by main
tenance standards (i.e., DMWR) in
pressed air supplies.
appropriate technical publications.
Overhaul is normally the highest degree
d. Adjust. To maintain, within prescribed
of maintenance performed by the Army.
limits, by bringing into proper or exact
Overhaul does not normally return an
position, or by setting the operating
item to like new condition.
characteristics to specified parameters.