Section I. INTRODUCTION
like type part, subassembly, or module (component or
assembly) for an unserviceable counterpart.
This appendix provides a summary of the mainte-
i. Repair. The application of maintenance services
nance operations for PP 4606C/G. It authorizes cate-
(inspect, test, service, adjust, align, calibrate, replace)
gories of maintenance for specific maintenance
or other maintenance actions (welding, grinding,
functions on repairable items and components and
riveting, straightening, facing, remachining, or resur-
the tools and equipment required to perform each
facing) to restore serviceability to an item by correct-
function. This appendix may be used as an aid in
ing specific damage, fault, malfunction, or failure in
planning maintenance operations.
a part, subassembly, module (component or
C-2. Maintenance Function
assembly), end item, or system.
j. Overhaul. That maintenance effort (service/ac-
Maintenance functions will be limited to and defined
tion) necessary to restore an item to a completely ser-
viceable/operational condition as prescribed by
a. Inspect. To determine the serviceability of an
maintenance standards (i.e., DMWR) in appropriate
item by comparing its physical, mechanical, and/or
technical publications. Overhaul is normally the
electrical characteristics with established standards
highest degree of maintenance performed by the Ar-
my. Overhaul does not normally return an item to
b. Test. To verify serviceability and to detect in-
like new condition.
cipient failure by measuring the mechanical or elec-
k. Rebuild. Consists of those services/actions
trical characteristics of an item and comparing those
characteristics with prescribed standards.
ment to a like new condition in accordance with
c. Service. Operations required periodically to keep
original manufacturing standards. Rebuild is the
an item in proper operating condition, i.e., to clean
highest degree of materiel maintenance applied to
(decontaminate), to preserve, to drain, to paint, or to
Army equipment. The rebuild operation includes the
replenish fuel, lubricants, hydraulic fluids, or com-
act of returning to zero those age measurements
pressed air supplies.
(hours, miles, etc.) considered in classifying Army.
d. Adjust. To maintain, within prescribed limits,
by bringing into proper or exact position, or by set-
ting the operating characteristics to the specified
C3. Column Entries
e. Align. To adjust specified variable elements of
an item to bring about optimum or desired perfor-
a. Column 1, Group Number. Column 1 lists group
numbers, the purpose of which is to identify com-
f. Calibrate. To determine and cause corrections to
ponents, assemblies, subassemblies, and modules
be made or to be adjusted on instruments or test
with the next higher assembly.
measuring and diagnostic equipments used in preci-
b. Column 2, Component/Assembly. Column 2 con-
tains the noun names of components, assemblies, sub-
sion measurement. Consists of comparisons of two in-
assemblies, and modules for which maintenance is
struments, one of which is a certified standard of
known accuracy, to detect and adjust any discrepancy
in the accuracy of the instrument being compared.
c. Column 3, Maintenance Functions. Column 3
g. Install. The act of emplacing, seating, or fixing
lists the functions to be performed on the item listed
into position an item, part, module (component or
i n column 2. When items are listed without
maintenance functions, it is solely for purpose of hav-
assembly) in a manner to allow the proper func-
ing the group numbers in the MAC and RPSTL coin-
tioning of the equipment or system.
h. Replace. The act of substituting a serviceable