MAINTENANCE ALLOCATION CHART
Section I. INTRODUCTION
E-ALIGN. To adjust specified variable elements of an
item to bring to optimum performance.
A. This section provides a general explanation of
F--CALIBRATE: To determine the corrections to be
all maintenance and repair functions authorized at
made in the readings of instruments or test equipment
various maintenance levels.
used in precise measurement. Consists of the com-
b. Section II designates overall responsibility for
parison of two instruments, one of which is a certified
the perform ante of maintenance functions on the
standard of known accuracy, to detect and adjust any
discrepancy in the accuracy of the instrument being
identified end item or component. The im-
compared with the certified standard.
plementation of the maintenance functions upon
G--INSTALL: To set up for use in an operational en-
the end item or component will be consistent with
vironment such as an emplacement, site. or vehicle.
the assigned maintenance functions.
H--REPLACE: To replace unserviceable items with
c. Section III lists the special tools and test
serviceable like items.
I--REPAIR: Those maintenance operations necessary to
equipment required for each maintenance function
r e s t o r e an item to serviceable condition through
as referenced from section II.
correction of material damage of a specific failure.
d. Section IV contains supplemental instructions,
Repair may be accomplished at each category of
explanatory notes and / or illustrations required
for a particular maintenance function.
JOVERHAUL: Normally, the highest degree of
m a i n t e n a n c e performed by the Army in order to
B - 2 . Explanation of Columns in Section H
minimize time work in process is consistent with quality
a. Group Number, Column (l). The assembly
and economy of operation. It consists of that main-
tenance necessary to restore an item to completely
group is a numerical group assigned to each
serviceable condition as prescribed by maintenance
assembly in a top down breakdown sequence. The
standards in technical publications for each item o f
applicable assembly groups are listed on the MAC
equipment. Overhaul normally does not return an item
in disassembly sequence beginning with the first
to like new, zero mileage, or zero hour condition.
assembly removed in a top down disassembly
K--REBUILD: The highest degree of materiel main-
tenance. It consists of restoring equipment as nearly as
possible to new condition in accordance with original
b. Assembly Group, Column (2). This column
manufacturing standards. Rebuild is performed only
contains a brief description of the components of
when required by operational considerations or other
each assembly group.
paramount factors and then only at the depot main-
c. Maintenance Functions, Column (3). This
tenance category. Rebuild reduces to zero the hours or
miles the equipment, or component thereof, has been in
column lists the various maintenance functions (A
through K) and indicates the lowest maintenance
d . Tools and Equipment, Column (4). This
c a t e g o r y authorized to perform these functions.
T h e symbol designations for the various main-
column is provided for referencing by code the
tenance categories are as follows:
special tools and test equipment, (sec. III ) required
to perform the maintenance functions (sec. II).
C-Operator or crew
e. Remarks, Column (5). T h i s c o l u m n i s
F--Direct support maintenance
provided for referencing by code the remarks (sec.
H--General support maintenance
IV) pertinent to the maintenance functions.
B - 3 . Explanation of Columns in Section III
The maintenance functions are defined as follows:
a. Reference Code. This column consists of a
A--INSPECT: To determine serviceability of an item by
n u m b e r and a letter separated by a dash. The
comparing its physical, mechanical, and electrical
number references the T&TE requirements column
characteristics with established standards.
B-TEST: To verify serviceability and to detect electrical
o n the MAC. The letter represents the specific
or mechanical failure by use of tast equipment.
maintenance function the item is to be used with.
C-SERVICE: To clean, to preserve, to charge, and to add
The letter is representative of columns A through K
fuel, lubricants, cooling agents, and air. If it it desired
on the MAC.
that elements, such as painting and lubricating, be
b. Maintenance Category. This column shows
defined separately, they may be so listed.
D-ADJUST: To rectify to the extent neceesary to bring
the lowest level of Maintenance authorized to use
into proper operating range.
the special tool or test equipment.