MAINTENANCE ALLOCATION CHART
Section I. INTRODUCTION
Consists of the comparison of two
a. This section provides a general explanation of all
instruments one of which is a detect standard
maintenance and repair functions authorized at various
of known accuracy. to detect and adjust any
discrepancy in the accuracy of the instrument
b. Section II designates overall responsibility for the
being compared with the certified standard.
performance of maintenance functions on the identified
G-INSTALL: To let up for use in an operational
end item or component. The implementation of the
environment such as an emplacement, site,
maintenance functions upon the end item or component
will be consistent with the assigned maintenance
H-REPLACE: To replace unserviceable items
with serviceable like items.
c. Section III lists the special tools and test
I-REPAIR: Those maintenance operations
equipment required for each maintenance function as
necessary to restore an item to serviceable
referenced from section II.
condition through correction of material
d. Section IV contains supplemental instructions or
damage or a specific failure. Repair may be
explanatory notes required for a particular maintenance
accomplished at each level of maintenance.
J-OVERHAUL : Normally. the highest degree
of maintenance performed by the Army in
C-2. Explanation of Columns in Section II
order to minimize the time work is in process
a. Group Number. Column (1). The assembly
consistent with quality and economy of
group number is a numerical group assigned to each
operation, it consists of that maintenance
assembly. The assembly groups are listed on he MAC
necessary to restore an item to completely
in disassembly sequence beginning with the first
serviceable condition as prescribed b!
assembly removed in a top down disassembly-
publications for each item of equipment.
b. Assembly Group. Column (2). This column
Overhaul normally does not return an item to
contains a brief description of the components of each
like new zero mileage or zero hour condition.
K-REBUILD: The highest degree of materiel
c. Maintenance Functions. Column (3). This
It consists of restoring
column lists the various maintenance functions (A
equipment as nearly as possible to new
through K). The upper case letter placed in the
condition in accordance with original
appropriate column indicates the lowest maintenance
level authorized to perform these functions. The symbol
performed only when required by operational
designations for the various maintenance levels are as
considerations or other paramount factors
and then only at the depot maintenance.
C-Operator or crew
level. Rebuild reduces to zero the hours or
miles the equipment. or component thereof.
F-Direct support maintenance
has been in use.
The maintenance functions are defined as follows:
d. Tools and Equipment. Column (4). This column
A-INSPECT: To determine serviceability of an
is provided for referencing b. code the special tools and
item by comparing its physical, mechanical.
test equipment (sec. III) required to perform the
and electrical characteristics with established
maintenance functions (sec. Il).
e. Remarks. Column (5). This column is provided
B-TEST: To verify serviceability, and to detect
for referencing by code the remarks (sec. II pertinent to
electrical or mechanical failure by use of test
the maintenance functions.
C-SERVICE: To clean. to preserve. to charge.
C-3. Explanation of Columns in Section III Not
and air. If it is desired that elements, such as
painting and lubricating, be defined
C-4. Explanation of Columns in Section IV
separately they may be so listed.
a. Reference Code. This column consists of two
D-ADJUST: To rectify to the extent necessary
letters separated b- a dash entered from Column 5 of
to bring into proper operating range.
section II. The first letter references alpha sequence
E-ALIGN: To adjust specified variable elements
in column 5 and the second letter references a
of an item to bring to optimum performance.
maintenance function. column 3. A through K.
F-CALIBRATE: To determine the corrections to
b. Remarks. This column lists information pertinent
be made in the reading of instrument or test
to the maintenance function to be performed as
equipment used in precise measurement
indicated in section II).