MAINTENANCE ALLOCATION CHART
Section I. INTRODUCTION
To verify serviceability and to detect
electrical or mechanical failure by use
a. This section provides a general explanation of
of test equipment.
all maintenance and repair functions authorized at
C-Service. To clean, to preserve, to charge, and to
various maintenance levels.
b. Section II designates overall responsibility for
and air. If it is desired that elements,
the performance of maintenance functions on the
such as painting and lubricating, be
identified end item or component. The implementation of
defined separately, they may be so
the maintenance functions upon the end item or
component will be consistent with the assigned
D-Adjust. To rectify to the extent necessary to bring
into proper operating range.
c. Section III lists the special tools and test
E-Align. To adjust specified variable elements of an
equipment required for each maintenance function as
item to bring to optimum performance.
F-Calibrate. To determine the corrections to be
d. Section IV contains supplemental instructions,
made in the readings of instruments or
explanatory notes and/or illustrations required for a
test equipment used in precise
particular maintenance function.
Consists of the
comparison of two instruments, one of
which is a certified standard of known
a. Group Number Column (1). This assembly
accuracy, to detect and adjust any
group is a numerical group assigned to each assembly in
discrepancy in the accuracy of the
a top down breakdown sequence.
instrument being compared with the
assembly groups are listed on the MAC in disassembly
sequence beginning with the first assembly removed in a
G-Install. To set up for use in an operational
top down disassembly sequence.
b. Assembly Group, Column (2). This column
emplacement, site, or vehicle.
contains a brief description of the components of each
H-Replace. To repair unserviceable items with
serviceable like items.
c. Maintenance Functions, Column (3). This
I-Repair. Those maintenance operations necessary
column lists the various maintenance functions (A
to restore an item to serviceable
through K) and indicates the lowest maintenance
category authorized to perform these functions. The
material damage or a specific failure.
symbol designations for the various maintenance
Repair may be accomplished at each
categories are as follows:
category of maintenance.
C-Operator or crew
J-Overhaul. Normally, the highest degree of
maintenance performed by the Army
F-Direct support maintenance
in order to minimize time work in
H-General support maintenance
process is consistent with quality and
economy of operation. It consists of
The maintenance functions are defined as follows:
that maintenance necessary to restore
A-Inspect. To determine serviceability of an item by
an item to completely serviceable
comparing its physical, mechanical,
and electrical characteristics with