MAINTENANCE ALLOCATION CHART
Section 1. INTRODUCTION
The maintenance functions are defined as follows:
a. This section provides a general explanation of all
Inspect: To determine serviceability of an item by
maintenance and repair functions authorized at
comparing its physical, mechanical, and electrical
various maintenance levels.
characteristics with established standards through
b. Section II designates overall responsibility for
Text: To verify serviceability and detect incipient failure
the performance of maintenance functions on the
by measuring the mechanical or electrical charac-
identified end item or component and the work
teristics of an item and comparing those characteris-
measurement time required to perform the func-
tics with prescribed standards.
tions by the designated maintenance level. The
Service: Operations required periodically to keep an item
implementation of the maintenance functions upon
in proper operating conditions. i.e., to clean, to
preserve, to drain. to paint, or to replenish fuel.
the end item or component will be consistent with the
lubricants, hydraulic fluids, or compressed air sup.
assigned maintenance functions.
c. Section I II - Special Tools and Test Equipment
Adjust: To maintain within prescribed limits, by bringing
Required for Each Maintenance Function Refer-
into proper or exact position, or by setting the
enced From Section II (Not Applicable).
operating characteristics to specified parameters.
Aline: To adust specified variable elements of an item to
d. Section IV contains supplemental instructions
bring about optimum or desired performance.
or explanatory notes for a particular maintenance
Calibrate: To determine and cause corrections to be made
function (Not Applicable).
or to be adjusted on instruments or test measuring
and diagnostic equipments used in precision mea-
B-2. Explanation of Columns in Section II
surement Consists of comparisons of two instru-
a. Column (1), Group Number. A number is
ments, one of which is a certified standard of known
accuracy, to detect and adjust any discrepancy in the
assigned to each group in a top down breakdown
accuracy of the instrument being compared.
sequence. The applicable groups are listed on the
Install: The act of emplacing:, seating, or fixing into
MAC in disassembly sequence beginning with the
position an item, part, or module (component or
first group removed.
assembly) in a manner to allow the proper functioning
b. Column (2), Assembly Group. This column
of an equipment or system.
Replace: The act of substituting a serviceable like type
contains a brief description of the components of
part, subassembly, or module (component or assem-
each numerical group.
bly) for an unserviceable counterpart.
c. Column (3), Maintenance Functions. This
Repair: The application of maintenance services (inspect,
column lists the various maintenance functions (A
test, service, adjust, align. calibrate, or replace) or
through K). The lowest maintenance level au-
other maintenance actions (welding, grinding, rivet-
ing. straightening. facing, remachining or resurfac-
thorized to perform these functions is indicated by a
ing) to restore serviceability to an item by correcting
symbol in the appropriate column. Work measure
specific damage. fault. malfunction, or failure in a
ment time standards (the active repair time required
part, subassembly, module (component or assembly).
to perform the maintenance function) are shown
end item, or system.
directly below the symbol identifying the mainte-
Overhaul: That maintenance effort (service/action)
necessary to restore an item to a completely
nance level. The symbol designations for the various
serviceable/operational condition as prescribed by
maintenance levels are as follows:
maintenance standards (i.e., DMWR) in appropriate
technical publication. Overhaul is normally the
Operator or crew.
highest degree of maintenance performed by the
Army. Overhaul does not normally return an item to
Direct support maintenance.
like new condition.
General support maintenance.
Rebuild: Consists of those service/actions necessary for