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