Section I. INTRODUCTION
assembly) in a manner to allow the proper functioning of
the equipment or system.
This appendix provides a summary of the maintenance
operations for PP-7078/U. It authorizes categories of
h. Replace. The act of substituting a serviceable
maintenance for specific maintenance functions on
like type part, subassembly, or module (component or
repairable items and components and the tools and
assembly) for an unserviceable counterpart.
equipment required to perform each function. This
The application of maintenance
appendix may be used as an aid in planning
services (inspect, test, service, adjust, align, calibrate,
replace) or other maintenance actions (welding, grinding
riveting, straightening, facing, remachining, or
resurfacing) to restore serviceability to an item by
Maintenance functions will be limited to and defined as
correcting specific damage, fault, malfunction, or failure
in a part, subassembly, module (component or
a. Inspect. To determine the serviceability of an
assembly), end item, or system.
item by comparing its physical, mechanical, and/or
j. Overhaul. That maintenance effort (service/
electrical characteristics with established standards
action) necessary to restore an item to a completely
serviceable/operational condition as prescribed by
b. Test. To verify serviceability and to detect
maintenance standards (i.e., DMWR) in appropriate
incipient failure by measuring the mechanical or
technical publications. Overhaul is normally the highest
electrical characteristics of an item and comparing those
degree of maintenance performed by the Army.
characteristics with prescribed standards.
Overhaul does not normally return an item to like new
c. Service. Operations required periodically to
keep an item in proper operating condition, i.e., to clean,
k. Rebuild. Consists of those services/actions
decontaminate), to preserve, to drain, to paint, or to
necessary for the restoration of unserviceable
replenish fuel lubricants, hydraulic fluids, or compressed
equipment to a like new condition in accordance with
original manufacturing standards. Rebuild is the highest
d. Adjust. To maintain, within prescribed limits, by
degree of materiel maintenance applied to Army
equipment. The rebuild operation includes the act of
bringing into proper or exact position, or by setting the
returning to zero those age measurements (hours,
operating characteristics to the specified parameters.
e. Align. To adjust specified variable elements of
an item to bring about optimum or desired performance.
f. Calibrate. To determine and cause corrections
to be made or to be adjusted on instruments or test
a. Column 1, Group Number. Column 1 lists group
measuring and diagnostic equipments used in precision
numbers, the purpose of which is to identify
Consists of comparisons of two
components, assemblies, subassemblies, and modules
instruments, one of which is a certified standard of
with the next higher assembly.
known accuracy, to detect and adjust any discrepancy in
the accuracy of the instrument being compared.
b. Column 2, Component/Assembly. Column 2
contains the noun names of components, assemblies,
g. Install. The act of emplacing, seating, or fixing
into position an item, part, module (component or