MAINTENANCE ALLOCATION CHART
Section I. INTRODUCTION
Install: To set up for use in an operational environment
a. This section provides a general explanation of
such as an emplacement, site, or vehicle.
Replace: To replace unserviceable items with serviceable
all maintenance and repair functions authorized at
assemblies, subassemblies, or parts.
various maintenance levels.
Repair: To restore an item to serviceable condition. This
b. Section II designates overall responsibility for
includes, but is not limited to, inspection, cleaning,
the performance of maintenance functions on the
preserving, adjusting, replacing, welding, riveting, and
identified end item or component. The implementa-
Overhaul: To restore an item to a completely serviceable
tion of the maintenance functions upon the end item
condition as prescribed by maintenance serviceability
or component will be consistent with the assigned
standards using the Inspect and Repair Only as Neces-
sary (IROAN) technique.
c. Section III lists the special tools and test equip-
Rebuild: To restore an item to a standard as nearly as
ment required for each maintenance function as
possible to original or new condition in appearance,
performance, and life expectancy. This is accomplished
referenced from section II
through complete disassembly of the item, inspection
d. Section IV contains supplemental instructions,
of all parts or components, repair or replacement of
explanatory notes and/or illustrations required for a
worn or unserviceable elements (items) using original
particular maintenance function.
manufacturing tolerances and specifications, and sub-
sequent reassembly of the item.
C-2. Explanation of Columns in Section II
a. Group Number, Column (1). The functional
d. Tools and Equipment, Column (4). This column
group is a numerical group set up on a functional
is provided for referencing by code the special tools
basis normally in accordance with their function and
and test equipment, (sec. III) required to perform
proximity to each other.
the maintenance functions (sec. II.
b. Functional Group, Column (2). This column con-
e. Remarks, Column (5). This column is provided
tains a brief description of the components of each
for referencing by code the remarks (sec. IV) perti-
nent to the maintenance functions.
c. Maintenance Functions, Column (3). This col-
umn lists the various maintenance functions (A
C-3. Explanation of Columns in Section III
through K) and indicates the lowest maintenance
a. Reference Code. This column consists of a num-
level authorized to perform these functions. The
ber and a letter separated by a dash. The number
symbol designations for the various maintenance
references the TandTE requirements column on the
levels are as follows:
MAC. The letter represents the specific maintenance
C - Operator or crew
function the item is to be used with. The letter is
O - organizational maintenance
representative of columns A through K on the MAC.
F - Direct support maintenance
b. Maintenance Category. This column shows the
The maintenance functions are defined as follows:
lowest level of maintenance authorized to use the
special tool or test equipment.
Inspect: To determine serviceability of an item by com-
c. Nomenclature. This column lists the name or
paring its physical, mechanical, and electrical charac-
identification of the tool or test equipment.
teristics with established standards.
d. Tool Number. This column lists the manufac-
Test To verify serviceability and to detect electrical or
turer's code and part number, or Federal Stock Num-
mechanical failure by use of test equipment.
Service: To clean, to preserve, to charge, to paint, and to
ber of tools and test equipment.
Adjust: To rectify to the extent necessary to bring into
C-4. Explanation of Columns in Section IV
proper operating range.
a. Reference Code. This column consists of two
Align: To adjust specified variable elements of an item to
letters separated by a dash, both of which are refer-
bring to optimum performance.
Calibrate: To determine the corrections to be made in the
ences to section II. The first letter references column
readings of instruments or test equipment used in pre-
5 and the second letter references a maintenance
cise measurement. Consists of the comparisons of two
function, column 3, A through K.
instruments, one of which is a certified standard of
b. Remarks. This column lists information perti-
known accuracy, to detect and adjust any discrepancy
nent to the maintenance function being performed,
in the accuracy of the instrument being compared with
the certified standard.
as indicated on the MAC, section II.