TM 32-5985-342-14&P
APPENDIX D
MAINTENANCE ALLOCATION CHART
Section I. INTRODUCTION
D-1 GENERAL.
g. Overhaul.
That
maintenance
effort
(services/actions) necessary to restore an item to a
completely serviceable/ operational condition as
a. This section provides a general explanation of
prescribed by maintenance standards; i.e., Depot
all maintenance and repair functions authorized at
Maintenance Work Requirement in appropriate technical
various maintenance levels.
publications. Overhaul is normally the highest degree of
b. The Maintenance Allocation Chart (MAC) in
maintenance performed by the Army. Overhaul does
not normally return an item to like new condition.
performance of maintenance functions on the identified
end item or component. The implementation of the
D-3 EXPLANATION OF COLUMNS IN THE MAC,
maintenance functions upon the end item or component
will be consistent with the assigned maintenance
functions.
a. Column 1, Group Number. Column 1 lists group
numbers, the purpose of which is to identify
equipment required for each maintenance function as
components, assemblies, subassemblies, and modules
referenced from Section II.
with the next higher assembly.
b. Column 2, Component/Assembly. Column 2
contains the names of components, assemblies,
D-2 MAINTENANCE FUNCTIONS.
subassemblies, and modules for which maintenance is
authorized.
a. Inspect. To determine the serviceability of an
c. Column 3, Maintenance Function. Column 3
item by comparing its physical, mechanical and/or
lists the functions to be performed on the item listed in
electrical characteristics with established standards
column 2. (For detailed explanation of these functions,
through examination.
see para. D-2.)
d. Column 4, Maintenance Level.
Column 4
b. Test.
To verify serviceability and detect
specifies, by the listing of a "work time" figure in the
incipient failure by measuring the mechanical or
appropriate subcolumn(s), the lowest level of
electrical characteristics of an item and comparing those
maintenance authorized to perform the function listed in
characteristics with prescribed standards.
column 3. This figure represents the active time
required to perform the maintenance function at the
c. Service. Operations required periodically to
indicated level of maintenance. If the number or
keep an item in proper operating condition; i.e., to clean
complexity of the tasks within the listed maintenance
(decontaminate), to preserve, to drain, to paint, or to
function vary at different maintenance levels,
replenish fuel, lubricants, hydraulic fluids, or
appropriate "work time" figures will be shown for each
compressed air supplies.
level. The number of man-hours specified by the "work
time" figure represents the average time required to
restore an item (assembly, subassembly, component,
d. Install. The act of emplacing, seating, or fixing
module, end item, or system) to a serviceable condition
into position an item, part, or module (component or
under typical field operating conditions. This time
assembly) in a manner to allow the proper functioning of
includes preparation time, troubleshooting time, and
an equipment or system.
quality assurance/quality control time in addition to the
time required to perform the specific tasks identified for
e. Replace. The act of substituting a serviceable
the maintenance functions authorized in the MAC. The
like type part, subassembly, or module for an
symbol designations for the various maintenance levels
unserviceable counterpart.
are as follows:
f. Repair.
The application of maintenance
C .......................................................... Operator or crew
services or other maintenance actions to restore
O.........................................Organizational maintenance
serviceability to an item by correcting specific damage,
F ..........................................Direct support maintenance
fault, malfunction, or failure in a part, subassembly,
H ...................................... General support maintenance
module (component or assembly), and item, or system.
D ...................................................... Depot maintenance
D-1
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