MAINTENANCE ALLOCATION CHART (ARMY ONLY)
B - TEST. To verify serviceability and to de-
C - 1 . GENERAL.
tect electrical or mechanical failure by use of test
a. This section provides a general explanation
of all maintenance and repair functions authorized at
various maintenance levels.
C - SERVICE. To clean, to preserve, to
charge, and to add fuel, lubricants, cooling agents,
b. Section II designates overall responsibility
and air. If it is desired that elements, such as paint-
for the performance of maintenance functions on the
ing and lubricating, be defined separately, they may
identified end item or component. The implementa-
be so listed.
tion of the maintenance functions upon the end item
or component will be consistent with the assigned
D - ADJUST. To rectify to the extent necessary
to bring into proper operating range.
c. Section III lists the special tools and test
E - ALIGN. To adjust specified variable ele-
equipment required for each maintenance function as
ments of an item to bring to optimum performance.
referenced from Section II.
F - CALIBRATE. To determine the corrections
d. Section IV contains supplemental instructions,
to be made in the readings of instruments or test
explanatory notes and/or illustrations required for a
equipment used in precise measurement. Consists
particular maintenance function.
of the comparison of two instruments, one of which
is a certified standard of known accuracy, to detect
EXPLANATION OF COLUMNS IN SECTION II.
and adjust any discrepancy in the accuracy of this
instrument being compared with the certified stan-
a. Group Number, Column 1. The assembly
group is a numerical group assigned to each assem-
bly in a top down breakdown sequence. The applicable
G - INSTALL. To set up for use in an operation-
assembly groups are listed on the MAC in disassem-
al environment such as an emplacement, site, or
bly sequence beginning with the first assembly re-
moved in a top down disassembly sequence.
H - REPLACE. To replace unserviceable items
b. Assembly Group, Column 2. This column
with serviceable like items.
contains a brief description of the components of each
I - REPAIR. Those maintenance operations
necessary to restore an item to serviceable condition
c. Maintenance Functions, Column 3. This col-
through correction of material damage or a specific
umn lists the various maintenance functions (A through
failure. Repair may be accomplished at each cate-
K) and indicates the lowest maintenance category
gory of maintenance.
authorized to perform these functions. The symbol
designations for the various maintenance categories
J - OVERHAUL.
Normally, the highest degree
of maintenance performed by the Army in order to
are as follows:
minimize time work in process is consistent with
C - Operator, Crew
O - Organizational maintenance
quality and economy of operation. It consists of that
maintenance necessary to restore an item to com-
F - Direct support maintenance
pletely serviceable condition as prescribed by main-
H - General support maintenance
tenance standards in technical publications for each
item of equipment. Overhaul normally does not re-
D - Depot maintenance
turn an item to like new, zero mileage, or zero hour
The maintenance functions are defined as follows:
K - REBUILD. The highest degree of material
A - INSPECT. To determine serviceability of an
maintenance. It consists of restoring equipment as
item by comparing its physical, mechanical, and
nearly as possible to new condition in accordance
electrical characteristics with established standards.