TM 11-6130-413-12
APPENDIX D
MAINTENANCE ALLOCATION
Section I. INTRODUCTION
(inspect, test, service, adjust, align, calibrate, replace)
D-1. General
or other maintenance actions (welding, grinding,
This appendix provides a summary of the maintenance
riveting, straightening, facing, remachining, or
operations for AN/USM-432. It authorizes categories
resurfacing) to restore serviceability to an item by
of maintenance of specific maintenance functions on
correcting specific damage, fault, malfunction, or
repairable items and components and the tools and
failure in a part, subassembly, module (component or
equipment required to perform each function. This
assembly), end item, or system.
appendix may be used as an aid in planning
j. Overhaul. That maintenance effort (ser-
maintenance operations.
vice/action) necessary to restore an item to a com-
pletely serviceable/operational condition as prescribed
D-2. Maintenance Function
by maintenance standards (i.e., DMWR) in appropriate
Maintenance functions will be limited to and defined
technical publications. Overhaul is normally the
as follows:
highest degree of maintenance performed by the
a. Inspect. To determine the serviceability of an
Army. Overhaul does not normally return an item to
item by comparing its physical, mechanical, and/or
like new condition.
k. Rebuild. Consists of those services/actions neces-
electrical characteristics with established standards
sary for the restoration of unserviceable equipment to
through examination.
b. Test. To verify serviceability and to detect
a like new condition in accordance with original manu-
incipient failure by measuring the mechanical or
facturing standards. Rebuild is the highest degree of
electrical characteristics of an item and comparing
materiel maintenance applied to Army equipment.
The rebuild operation includes the act of returning to
those characteristics with prescribed standards.
c. Service. Operations required periodically to keep
zero those age measurements (hours, miles, etc.), con-
an item in proper operating condition; i.e., to clean
sidered in classifying any equipments/components.
(decontaminate), to preserve, to drain, to paint, or to
D-3. Column Entries
replenish fuel, lubricants, hydraulic fluids, or com-
pressed air supplies.
a. Column 1, Group Number. Column 1 lists group
d. Adjust. To maintain, within prescribed limits, by
numbers, the purpose of which is to identify
bringing into proper or exact position, or by setting
component, assemblies, subassemblies, and modules
with the next higher assembly.
the operating characteristics to the specified para-
meters.
b. Column 2, Component/Assembly. Column 2 con-
e. Align. To adjust sptxified variable elements of an
tains the noun names of components, assemblies, sub
item to bring about optimum or desired performance.
assemblies, and modules for which maintenance is
f. Calibrate. To determine and cause connections to
authorized.
be made or to be adjusted on instruments or test
c. Column 3, Maintenance Functions. Column 3 lists
measuring and diagnostic equipments used in pre-
the functions to be performed on the item listed in
cision measurement. Consists of comparisons of two
column 2. When items are listed without maintenance
instruments, one of which is a certified standard of
functions, it is solely for purpose of having the group
known accuracy, to detect and adjust any discrepancy
numbers in the MAC and RPSTL coincide.
in the accuracy of the instrument being compared.
d. Column 4, Maintenanwce Category. Column 4
g. Install. The act of emplacing, seating, or fixing
specifies, by the listing of a "work time" figure in the
into position an item, part, module (component or
appropriate subcolumn(s), the lowest level of mainten-
assembly) in a manner to allow the proper functioning
ance authorized to perform the function listed in
of the equipment or system.
column 3. This figure represents the active time re-
h. Replace. The act of substituting a serviceable like
quired to perform that maintenance function at the
type part, subassembly, or module (component or as-
indicated category of maintenance. If the number or
sembly) for an unserviceable counterpart.
complexity of the tasks within the listed maintenance
i. Repair. The application of maintenance services
function vary at different maintenance categories.
D-1
