MAINTENANCE ALLOCATION CHART
Section I. INTRODUCTION
TEST: To verify serviceability and to detect
This section provides a general explanation of
electrical or mechanical failure by use of test
all maintenance and repair functions authorized at
various maintenance levels.
SERVICE: To clean, to preserve, to charge, and
to add fuel, lubricants, cooling agents, and air. (If
it is desired that elements, such as painting and
the performance of maintenance functions the identified
lubricating, be defined separately, they may be so
end item or component. The implementation of the
maintenance functions upon t identified end item or
ADJUST: To rectify to the extent necessary to
component will be consistent with the assigned
bring into proper operating range.
ALIGN: To adjust specified variable elements of
Section III lists the special tools and t
an item to bring to optimum performance.
equipment required for each maintenance function as
CALIBRATE: To determine the corrections to be
referenced from Section II. "Not applicable.
made in the readings of instruments or test
equipment used in precise measurement.
d. Section IV contains supplemental instructions or
Consists of the comparison of two instruments,
explanatory notes required for a particular maintenance
one of which is a certified standard of known
function. "Not applicable."
accuracy, to detect and adjust any discrepancy in
the accuracy of the instrument being compared
with the certified standard.
a. Group Number, Column (1). The assembly group
INSTALL. To set up for use in an operational
number is a numerical group assigned each assembly.
environment such as an emplacement, site, or
The assembly groups are list on the MAC in
disassembly sequence beginning with the first assembly
REPLACE: To replace unserviceable items with
removed in a top down disassembly sequence.
serviceable like items.
Assembly Group, Column (2). This column
necessary to restore an item to serviceable
contains a brief description of the component of each
condition through correction of material damage
or a specific failure. Repair may be accomplished
c. Maintenance Futnctions, Column (3).
at each level of maintenance.
column lists the various maintenance functions (A
OVERHAUL: 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 consistant with
level authorized to perform these functions. The active
quality and economy of operation. It consists of
repair time required to perform the maintenance
that maintenance necessary to restore an item to
function is included directly below the symbol identifying
completely serviceable condition as prescribed by
the category of maintenance. The symbol designations
maintenance standards in technical publications
for the various maintenance levels are as follows:
for each item of equipment. Overhaul normally
does not return an item to like new, zero mileage,
C-Operator or crew
or zero hour condition.
REBUILD: The highest degree of materiel
F-Direct support maintenance
maintenance. It consists of restoring equipment as
nearly as possible to new condition in accordance
The maintenance functions are defined as follows:
with original manufacturing standards. Rebuild is
performed only when required by operational
INSPECT: To determine serviceability of an item
considerations or other paramount factors and
by comparing its physical, mechanical, and
then only at the depot maintenance level. Rebuild