TM 11-5841-287-12
APPENDIX D
MAINTENANCE ALLOCATION
Section I. INTRODUCTION
j.
Overhaul. That maintenance effort (service/
D-1. General
action) necessary to restore an item to a completely
This appendix provides a summary of the maintenance
serviceable/operational condition as prescribed by
operations for the AN/AKT-18B it authorizes categories
maintenance standards (i.e., DMWR) in appropriate
of maintenance for specific maintenance functions on
technical publications. Overhaul is normally the highest
repairable items and components and the tools and
degree of maintenance performed by the Army.
equipment required to perform each function. This
Overhaul does not normally return an item to like new
appendix may be used as an aid in planning
condition.
maintenance operations.
k. Rebuild. Consists of those services/actions
D-2. Maintenance Function
necessary for the restoration of unserviceable equipment
Maintenance functions will be limited to and defined as
to a like new condition in accordance with original
follows:
manufacturing standards. Rebuild is the highest degree
a. Inspect. To determine the serviceability of an
of materiel maintenance applied to Army equipment.
item by comparing its physical, mechanical, and/or
The rebuild operation includes the act of returning to zero
electrical characteristics with established standards
those age measurements (hours, miles, etc ) considered
through examination.
in classifying Army equipments/components.
b. Test. To verify serviceability and to detect
D-3. Column Entries
incipient failure by measuring the mechanical or
a. Column 1, Group Number. Column 1 lists
electrical characteristics of an item and comparing those
group numbers, the purpose of which is to identify
characteristics with prescribed standards.
components, assemblies, subassemblies, and modules
c. Service. Operations required periodically to
with the next higher assembly.
keep an item in proper operating condition, i.e., to clean
b. Column 2, Component/Assembly. Column 2
(decontaminate), to preserve, to drain, to paint, or to
contains the noun names of components, assemblies,
replenish fuel, lubricants, hydraulic fluids, or compressed
subassemblies, and modules for which maintenance is
air supplies.
authorized.
d. Adjust. To maintain, within prescribed limits,
c. Column 3, Maintenance Functions. Column 3
by bringing into proper or exact position, or by setting the
lists the functions to be performed on the item listed in
operating characteristics to the specified parameters.
column 2. When items are listed without maintenance
e. Align. To adjust specified variable elements of
functions, it is solely for purpose of having the group
an item to bring about optimum or desired performance.
numbers in the MAC and RPSTL coincide.
f.
Calibrate. To determine and cause corrections
d. Column 4, Maintenance Category. Column 4
to be made or to be adjusted on instruments or test
specifies, by the listing of a "work time" figure in the
measuring and diagnostic equipments used in precision
appropriate subcolumn(s), the lowest level of
measurement.
Consists of comparisons of two
maintenance authorized to perform the function listed in
instruments, one of which is a certified standard of
column 3. This figure represents the active time required
known accuracy, to detect and adjust any discrepancy in
to perform that maintenance function at the indicated
the accuracy of the instrument being compared.
category of maintenance. If the number or complexity of
g. Install. The act of emplacing, seating, or fixing
the tasks within the listed maintenance function vary at
into position an item, part, module (component or
different maintenance categories, appropriate "work
assembly) in a manner to allow the proper functioning of
time" figures will be shown for each category. The
the equipment or system.
number of task hours specified by the "work time" figure
h. Replace. The act of substituting a serviceable
represents the average time required to restore an item
like type part, subassembly, or module (component or
(assembly, subassembly, component, module, end item
assembly) for an unserviceable counterpart.
or system) to a serviceable condition under typical field
i.
Repair.
The application of maintenance
operating conditions. This time includes preparation
services (inspect, test, service, adjust, align, calibrate,
time, troubleshooting time, and quality assurance/quality
replace) or other maintenance actions (welding, grinding,
control time in addition to the time required to perform
riveting,
straightening,
facing,
remachining,
or
the specific tasks identified for the maintenance
resurfacing) to restore serviceability to an item by
functions authorized in the maintenance allocation chart.
correcting specific damage, fault, malfunction, or failure
Subcolumns of column 4 are as follows:
in a part, subassembly, module (component or
C - Operator/Crew
assembly), end item, or system.
0 - Organizational
D-1
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