MAINTENANCE ALLOCATION CHART
Section 1. INTRODUCTION
elements, such as painting and lubricating, be defined
separately, they must be so listed).
a. This section provides a general explanation of
ADJUST: To rectify to the extent necessary to bring into
all maintenance and repair functions authorized at
proper operating range.
various maintenance levels.
ALINE: To adjust specified variable elements of an item
to bring to optimum performance.
b. Section II designates overall responsibility for
CALIBRATE: To determine the corrections to be made in
the performance of maintenance functions on the
the readings of instruments or teat equipment used in
identified end item or component. The im-
precise measurement. Consists of the comparison of two in-
plementation of the maintenance functions upon the
struments, one of which is a certified standard of known ac-
end item or component will be consistent with the
curacy, to detect and adjust any discrepancy in the accuracy
of the instrument being compared with the certified stan-
assigned maintenance functions.
c. Section III lists the special tools and test equip-
INSTALL: To eat up for use in an operational environment
ment required for each maintenance function as
such as an emplacement, site, or vehicle.
referenced from section II.
REPLACE: To replace unserviceable items with ser-
d. Section IV contains supplemental instructions
viceable like items.
REPAIR: Those maintenance operations necessary to
or explanatory notes required for a particular main-
restore en item to serviceable condition through correction
of material damage or specific failure. Repair may be ac-
complished at each level of maintenance.
B-2 Explanation of Columns in Section
OVERHAUL: Normally, the highest degree of maintenance
performed by the Army in order to minimise time work is in
process consistent with quality and economy of operation. It
a. Group Number, Column (1). The assembly
consists of that maintenance necessary to restore an item to
group number is a numerical group assigned to each
completely serviceable condition as prescribed by main-
assembly. The assembly groups are listed on the
tenance standards in technical publications for each item of
equipment. Overhaul normally does riot return an item to
MAC in disassembly sequence beginning with the
like new, zero mileage, or zero hour condition.
first assembly removed in a top down disassembly
REBUILD: The highest degree of material maintenance. It
consists of restoring equipment es nearly as possible to new
b. Assembly Group, Column (2). This column con-
condition in accordance with original manufacturing stan-
tains a brief description of the components of each
dards. Rebuild is performed only when required by
operational considerations or other paramount factors and
then only at the depot maintenance level. Rebuild reduces
c. Maintenance Functions, Column (3). This
to zero the hours or miles the equipment, or component
column lists the various maintenance functions (A
thereof, has been in use.
through K). The upper case letter placed in the ap-
propriate column indicates the lowest maintenance
d. Tools and Equipment, Column (4). This column
level authorized to perform these functions. The ac-
is provided for referencing by code the special tools
tive repair time required to perform the maintenance
and test equipment (sec III), required to perform the
maintenance functions (sec II).
function is included directly below the symbol iden-
tifying the category of maintenance. The symbol
e. Remarks, Column (5). This column is provided
designations for the various maintenance levels are
for referencing by code the remarks (sec IV) per-
tinent to the maintenance functions.
C Operator or crew
B-3 Explanation of Columns in Section
O Organizational maintenance
F Direct support maintenance
H General support maintenance
a. Reference Code. This column consists of a num-
D Depot maintenance
ber and a letter separated by a dash. The number
The maintenance functions are defined as follows:
references the T&TE requirements listed in section
II. The letter represents the specific maintenance
INSPECT: To determine serviceability of an item by com-
function the item is to be used within columns A
paring its physical, mechanical, and electrical charac-
teristics with established standards,
through K of the section II.
TEST: To verify serviceability and to detect electrical
b. Maintenance Level. This column shows the
or mechanical failure by use of text equipment.
lowest level of maintenance authorized to use the
SERVICE: To clean, to preserve, to charge, and to add fuel,
special tool or test equipment.
lubricants, cooling agents, and air. (If it is desired that