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