APPENDIX B
MAINTENANCE ALLOCATION CHART
Section I. INTRODUCTION
B-1. General
of an item and comparing those characteristics with
prescribed standards.
a. This section provides a general explanation of all
maintenance and repair functions authorized at various
C-Service: Operations required periodically to keep an
maintenance levels.
item in proper operating condition, i.e., to clean, to
b. Section II designates overall responsibility for the
preserve, to drain, to paint, or to replenish fuel, lubricants,
performance of maintenance functions on the identified
hydraulic fluids, or compressed air supplies.
end item or component and the work measurement time
required to perform the functions by the designated
D-Adjust: To maintain within prescribed limits, by bringing
maintenance level.
The implementation of the
into proper or exact position, or by setting the operating
maintenance functions upon the end item or component
characteristics to specified parameters.
will be consistent with the assigned maintenance
functions.
E-Aline: To adjust specified variable elements of an item
to bring about optimum or desired performance.
c. Section III lists the special tools and test
equipment required for each maintenance function as
F-Calibrate: To determine and cause corrections to be
referenced from Section II (Not Applicable).
made or to be adjusted on instruments or test measuring
and
diagnostic
equipments
used
in
precision
d. Section IV contains supplemental instructions or
measurement.
Consists of comparisons of two
explanatory notes for a particular maintenance function
instruments, one of which is a certified standard of known
(Not Applicable).
accuracy, to detect and adjust any discrepancy in the
accuracy of the instrument being compared.
B-2. Explanation of Columns in Section II
a. Column 1, Group Number. A number is assigned to
G-Install The act of emplacing, seating, or fixing into
each group in a top down breakdown sequence. The
position an item, part, or module (component or
applicable groups are listed on the MAC in disassembly
assembly) in a manner to allow the proper functioning of
sequence beginning with the first group removed.
an equipment or system.
b. Column (2), Function Group. This column contains a
H-Replace: The act of substituting a serviceable like type
brief description of the components of each numerical
part, subassembly, or module (component or assembly)
group.
for an unserviceable counterpart.
c. Column (3), Maintenance Functions. This column lists
I-Repair: The application of maintenance services
the various maintenance functions (A through K). The
(inspect, test, service, adjust, align, calibrate, or replace)
lowest maintenance level authorized to perform these
or other maintenance actions (welding, grinding, reveting,
functions is indicated by a symbol in the appropriate
straightening, facing, remachining or resurfacing) to
column. Work measurement time standards (the active
restore serviceability to an item by correcting specific
repair time required to perform the maintenance function)
damage, fault, malfunction, or failure in a part,
are shown directly below the symbol identifying the
subassembly, modure (component or assembly), end
maintenance level. The symbol designations for the
item, or system.
various maintenance levels are as follows:
C
Operator or crew
J-Overhaul That maintenance effort (service/ action)
O
Organization maintenance
necessary to restore an item to a completely
F
Direct support maintenance
serviceable/operational condition as prescribed by
H
General support maintenance
maintenance standards (i.e., DMWR) in appropriate
D
Depot maintenance
technical publication. Overhaul is normally the highest
The maintenance functions are defined as follows:
degree of maintenance performed by the Army. Overhaul
A-Inspect.: To determine serviceability of an item by
does not normally return an item to like new condition.
comparing its physical, mechanical, and electrical
characteristics with established standards through
K-Rebuild: Consists of those services/actions necessary
examination.
for the restoration of unserviceable equipment to a like
new condition in accordance with original manufacturing
B-Test: To verify serviceability and detect incipient failure
standards. Rebuild is the highest degree of materiel
by measuring the mechanical or electrical characteristics
maintenance applied to
B-1
