MAINTENANCE ALLOCATION CHART
Section I. INTRODUCTION
that elements, such as painting and lubricating, be
defined separately, they may be so listed.
a. This section provides a general explanation of all
Adjust. To rectify to the extent necessary to bang into
maintenance and repair functions authorized at various
proper operating range.
Align. To adjust specified variable elements of an item
. Section II designates overall responsibility for the
to bring to optimum performance.
performance of maintenance functions on the identified end
Calibrate. To determine the correction. to be made in
item or component. The implementation of the maintenance
the readings of in-trmnents or test equipment used in
functions upon the end item or component will be consistent
precise measurement. Consists of the comparison of
with the assigned maintenance function.
two instruments, one of which is a certified standard of
known accuracy, to detect and Adjust any discrepancy
c. Section III lists the special tool. and test equipment
in the accuracy of the instrument being compared with
required for each maintenance function as referenced from
the certified standard.
Section II. (Not applicable)
To set up for use in an operational
environment such a. an emplacement, site, or vehicle.
d. Section IV contains supplemental instructions,
To replace unserviceable item.
explanatory notes and / or illustrations required for a particular
serviceable like items.
maintenance function. (Not applicable)
Repair. Those maintenance operation necessary to
restore an item to serviceable condition through
correction of material damage or a specific failure.
a. Group Number, Column (1). The assembly group is a
Repair may be accomplished with each category of
numerical group assigned to each assembly in a top down
breakdown sequence. The applicable assembly groups are
Normally, the highest degree of
listed on the MAC in disassembly sequence beginning with the
maintenance preformed by the Army in order to
first assembly removed in a top down disassembly sequence.
minimize time work in process is consistent with
quality and economy of operation. It consists of that
b. Assembly Group, Column (2). This column contain. a
maintenance necessary to restore an item to
brief description of the components of each assembly group.
completely serviceable condition e' prescribed by
maintenance standards in technical publication. for
c. Maintenance Function`, Column (3). This column lists
each item of equipment. Overhaul normally doe. not
the various maintenance functions (A through K) and indicates
return an item to like new, zero mileage, or zero hour
the lowest maintenance category authorized to perform these
The symbol designations for the various
Rebuild. The highest degree of materiel maintenance.
maintenance categories are as follows:
It consists of restoring equipment a. nearly as possible
to new condition in accordance with original
C-Operator or crew
manufacturing standards. Rebuild i. performed only
when required by operational considerations or other
F-Direct support maintenance
paramount factors and then only at the depot
H-General support maintenance
maintenance category. Rebuild reduce. to zero the
hours or miles the equipment' or component thereof,
has been in use.
The maintenance functions are defined as follows:
d. Tool' and Equipment. Column (4). This column is
provided for referencing by code the special tools and test
A - Inspect. To determine serviceability of an item by
equipment, (sec. III) required to perform the maintenance
comparing it. physical, mechanical, and electrical
functions (sec. II).
characteristics with established standards.
B - Test. To verify serviceability and to detect electrical or
e. Remarks. Column (5). This column is provided for
mechanical failure by use of test equipment.
referencing by code the remarks (sec. IV) pertinent to the
C - Service. To clean, to preserve, to charge, and to add
fuel, lubricants, cooling agents, and air. If it is desired