TM 11-5896-463-15
MAINTENANCE ALLOCATION
Section I. INTRODUCTION
C-1. General
the proper functioning of the equipment or sys-
This appendix provides a summary of the
tem.
maintenance operations for AN/MSC-31A. It
h. Replace. The act of substituting a service-
authorizes categories of maintenance for specific
able like type part, subassembly, or module
maintenance functions on repairable items and
(component or assembly) for an unserviceable
c o m p o n e n t s and the tools and equipment
counterpart.
required to perform each function. This ap-
i. Repair.
The application of maintenance
pendix may be used as an aid in planning main-
services (inspect, test, service, adjust, align,
tenance operations.
calibrate, replace) or other maintenance actions
C-2. Maintenance Function
(welding, grinding, riveting, straightening, facing,
remachining, or resurfacing) to restore service-
Maintenance functions will be limited to and
ability to an item by correcting specific damage,
defined as follows:
fault, malfunction, or failure in a part, sub-
a. Inspect. To determine the serviceability of
assembly, module (component or assmebly),
an item by comparing its physical, mechanical,
end item, or system.
and/ or electrical characteristics with established
j. Overhaul.
That maintenance effort (ser-
standards through examination.
vice/action) necessary to restore an item to a
b. Test. To verify serviceability and to detect
completely serviceable/operational condition
incipient failure by measuring the mechanical or
as prescribed by maintenance standards (i.e.,
electrical characteristics of an item and com-
DMWR) in appropriate technical publications.
paring those characteristics with prescribed
Overhaul is normally the highest degree of
standards.
maintenance performed by the Army. Overhaul
c. Service. Operations required periodically
does not normally return an item to like new
to keep an item in proper operating condition,
condition.
i.e., to clean (decontaminate), to preserve, to
k. Rebuild. Consists of those services/actions
drain, to paint, or to replenish fuel, lubricants,
hydraulic fluids, or compressed air supplies.
equipment to a like new condition in accordance
d. Adjust.
To maintain, within presribed
with original manufacturing standards. Rebuild
limits, by bringing into proper or exact posi-
is the highest degree of materiel maintenance
tion, or by setting the operating characteristics
applied to Army equipment. The rebuild opera-
to the specified parameters.
tion includes the act of returning to zero those
e. Align.
To adjust specified variable ele-
age measurements (hours, miles, etc.) considered
ments of an item to bring about optimum or
in classifying Army equipments/components.
desired performance.
f. Calibrate.
To determine and cause cor-
C-3. Column Entries
rections to be made or to be adjusted on in-
a. Column 1, Group Number.
struments or test measuring and diagnostic
Column 1
lists group numbers, the purpose of which is to
equipments used in precision measurement.
identify components, assemblies, subassemblies,
Consists of comparisons of two instruments,
and modules with the next higher assembly.
one of which is a certified standard of known
b. Column 2, Component/Assembly. Column
accuracy, to detect and adjust any discrepancy
2 contains the noun names of components,
in the accuracy of the instrument being com-
assemblies, subassemblies, a n d modules for
pared.
which maintenance is authorized.
g. Install. The act of emplacing, seating, or
c. Column 3, Maintenance Functions. Col-
fixing into position an item, part, module
umn 3 lists the functions to be performed on the
(component or assembly) in a manner to allow