Section I. INTRODUCTION
The application of maintenance
services (inspect, test, service, adjust, align, calibrate,
replace) or other maintenance actions (welding, grinding,
This appendix provides a summary of the maintenance
riveting straightening, facing remachining or resurfacing)
operations for the R-2176/FRN. It authorizes categories
to restore serviceability to an item by correcting specific
of maintenance for specific maintenance functions on
damage, fault, malfunction, or failure in a part,
repairable items and components and the tools and
subassembly, module (component or assembly), end
equipment required to perform each function. This
item, or system.
appendix may be used as an aid in planning
(service/action) necessary to restore an item to a
B-2. Maintenance Function
prescribed by maintenance standards (i.e., DMWR) in
appropriate technical publications. Overhaul is normally
Maintenance functions will be limited to and defined as
the highest degree of maintenance performed by the
a. Inspect. To determine the serviceability of an
Army. Overhaul does not normally return an item to like
item by comparing its physical, mechanical, and/or
k. Rebuild. Consists of those services/actions
electrical characteristics with established standards
necessary for the restoration of unserviceable equipment
b. Test. To verify serviceability and to detect
to a like new condition in accordance with original
manufacturing standards. Rebuild is the highest degree
incipient failure by measuring the mechanical or
of materiel maintenance applied to Army equipment.
electrical characteristics of an item and comparing those
The rebuild operation includes the act of returning to
characteristics with prescribed standards.
c. Service. Operations required periodically to
zero those age measurements (hours, miles, etc.)
considered in classifying Army equipments/components.
keep an item in proper operating condition, i.e., to clean
(decontaminate), to preserve, to drain, to paint, or to
B-3. Column Entries
replenish fuel, lubricants, hydraulic fluids, or compressed
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 the
components, assemblies, subassemblies, and modules
operating characteristics to the specified parameters.
e. Align. To adjust specified variable elements of
with the next higher assembly.
b. Column 2, Component/Assembly. Column 2
an item to bring about optimum or desired performance.
f. Calibrate. To determine and cause corrections
contains the noun names of components, assemblies,
subassemblies, and modules for which maintenance is
to be made or to be adjusted on instruments or test
measuring and diagnostic equipments used in precision
c. Column 3, Maintenance Functions. Column 3
Consists of comparisons of two
lists the functions to be performed on the item listed in
instruments, one of which is a certified standard of
column 2. When items are listed without maintenance
known accuracy, to detect and adjust any discrepancy in
functions, it is solely for purpose of having the group
the accuracy of the instrument being compared.
g. Install. The act of emplacing, seating, or fixing
numbers in the MAC and RPSTL coincide.
d. Column 4, Maintenance Category. Column 4
into position an item, part, module (component or
specifies, by the listing of a "work time" figure in the
assembly) in a manner to allow the proper functioning of
appropriate subcolumn(s), the lowest level of
the equipment or system.
h. Replace. The act of substituting a serviceable
maintenance authorized to perform the function listed in
like type part, subassembly, or module (component or
assembly) for an unserviceable counterpart.