TM 5-4310-367-14
APPENDIX C
MAINTENANCE ALLOCATION CHART
Section 1. INTRODUCTION
f. Calibrate. To determine and cause corrections to
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GENERAL.
be made or to be adjusted on instruments or test
measuring and diagnostic equipments used in pre-
a. This section provides a general explanation of all
cision measurement. Consists of comparisons of
maintenance and repair functions authorized at
two instruments, one of which is a certified stan-
various maintenance levels.
dard of known accuracy, to detect and adjust any
discrepancy in the accuracy of the instrument
b. The Maintenance Allocation Chart (MAC) in
being compared.
Section II designates overall responsibility for the
performance of maintenance functions on the
identified end item or component. The imple-
g. Install. The act of emplacing, seating, or fixing
mentation of the maintenance functions upon the
into position an item, part, or module (component
end item or component will be consistent with the
or assembly) in a manner to allow the proper func-
assigned maintenance functions.
tioning of an equipment or system.
c. Section III lists the special tools and test equip-
ment required for each maintenance function as
h. Replace. The act of substituting a serviceable like
referenced from Section II.
type part, subassembly, or module (component or
assembly) for an unserviceable counterpart.
d. Section IV contains supplemental instructions on
explanatory notes for a particular maintenance
function.
i. Repair. The application of maintenance services
(inspect, test, service, adjust, align, calibrate or
replace) or other maintenance actions (welding,
C-2. MAINTENANCE FUNCTIONS.
grinding, riveting, straightening, facing, remachin-
ing or resurfacing) to restore serviceability to an
item by correcting!] specific damage, fault, mal-
a. Inspect. To determine the serviceability of an
function, or failure in a part, subassembly, module
item by comparing its physical, mechanical and/or
(component or assembly), end item, or system.
electrical characteristics with established standards
through examination.
Overhaul. That maintenance effort (services/
j
b. Test. To verify serviceability and detect incipient
actions) necessary to restore an item to a com-
failure by measuring the mechanical or electrical
pletely serviceable/operational condition as pre-
characteristics of an item and comparing those
scribed by maintenance standards (i.e., DMWR)
characteristics with prescribed standards.
in appropriate technical publications. Overhaul
is normally the highest degree of maintenance per-
c. Service. Operations required periodically to keep
formed by the Army, Overhaul does not normally
an item in proper operating condition, i.e., to
return an item to like new condition.
clean (decontaminate), to preserve, to drain, to
paint, or to replenish fuel, lubricants, hydraulic
fluids, or compressed air supplies.
k. Rebuild. Consists of those services/actions neces-
sary for the restoration of unserviceable equip-
d. Adjust. To maintain, within prescribed limits, by
ment to a like new condition in accordance with
bringing into proper or exact position, or by
original manufacturing standards. Rebuild is the
setting the operating characteristics to specified
highest degree of materiel maintenance applied to
parameters.
Army equipment. The rebuild operation includes
the act of returning to zero those age measure-
e. Align. To adjust specified variable elements of an
ments (hours/miles, etc. ) considered in classifying
item to bring about optimum or desired perform-
Army equipments/components.
ance.
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