Section I. INTRODUCTION
h. Replace. The act of substituting a serviceable
like type part, subassembly, or module (component or
This appendix provides a summary of the maintenance
assembly) for an unserviceable counterpart.
operations for AS-2731/GRC. It authorizes categories of
The application of maintenance
maintenance for specific maintenance functions on
services (inspect, test, service, adjust, align, calibrate,
reparable items and components and the tools and
replace) or other maintenance actions (welding, grinding,
equipment required to perform each function. This
appendix may be used as an aid in planning
resurfacing) to restore serviceability to an item by
correcting specific damage, fault, malfunction, or failure
C-2. Maintenance Function
in a part, subassembly, module (component or
Maintenance functions will be limited to and defined as
assembly), end item, or system.
That maintenance effort
a. Inspect. To determine the serviceability of an
(service/action) necessary to restore an i .m to a
item by comparing its physical, mechanical, and/or
electrical characteristics with established standards
prescribed by maintenance standards (i.e., DMWR) in
appropriate technical publications. Overhaul is normally
b. Test. To verify serviceability and to detect
the highest degree of maintenance performed by the
incipient failure by measuring the mechanical or
Army. Overhaul does not normally return an item to like
electrical characteristics of an item and comparing those
characteristics with prescribed standards.
k. Rebuild. Consists of those services/actions
c. Service. Operations require periodically to keep
necessary for the restoration of unserviceable equipment
an item in proper operating condition, i.e., to clean
to a like new condition in accordance with original
(decontaminate), to preserve, to drain, to paint, or to
manufacturing standards. Rebuild is the highest degree
replenish fuel, lubricants, hydraulic fluids, or compressed
of materiel maintenance applies to Army equipment.
The rebuild operation includes the act of returning to zero
d. Adjust. To maintain, within prescribed limits, by
those age measurements (hours, miles, etc.) considered
bringing into proper or exact position, or by setting the
in classifying Army equipments/components.
operating characteristics to the specified parameters.
C-3. Column Entries
e. Align. To adjust specified variable elements
a. Column 1, Group .Number. Column 1 lists
of an item to bring about optimum or desired
group numbers, the purpose of which is to identify
components, assemblies, subassemblies, and modules
f. Calibrate. To determine and cause corrections
with the next higher assembly.
to be made or0 to be adjusted on instruments or test
b. Column 2, Component/Assembly. Column 2
measuring and diagnostic equipments used in precision
contains the noun names of components, assemblies,
Consists of comparisons of two
subassemblies, and modules for which maintenance is
instruments, one of which is a certified standard of
known accuracy, to detect and adjust any discrepancy in
c. Column 3, Maintenance Functions.. Column 3
the accuracy of the instrument being compared.
lists the functions to be performed on the item
g. Install. The act of emplacing, seating, or fixing
into position an item, part, module (component or
assembly) in a manner to allow the proper functioning of
the equipment or system.