Section I. INTRODUCTION
subassembly, module (component or assembly), end
item, or system.
This appendix provides a summary of the maintenance
j. Overhaul. That maintenance effort (service/ac-
operations for MK-1191 /AR. It authorizes categories of
tion) necessary to restore an item to a completely ser-
maintenance for specific maintenance functions on
viceable/operational condition as prescribed by
repairable items and components and the tools and
maintenance standards (i.e., DMWR) in appropriate
equipment required to perform each function. This ap-
technical publications. Overhaul is normally the highest
pendix may be used as an aid in planning maintenance
degree of maintenance performed by the Army.
Overhaul does not normally return an item to like new
C-2. Maintenance Function
k. Rebuild. Consists of those services/actions
Maintenance functions will be limited to and defined as
ment to a like new condition in accordance with original
a. Inspect. To determine the serviceability of an
manufacturing standards. Rebuild is the highest degree
item by comparing its physical, mechanical, and/or
of materiel maintenance applied to Army equipment.
electrical characteristics with established standards
The rebuild operation includes the act of returning to
zero those age measurements (hours, miles, etc.) con-
b. Test. To verify serviceability and to detect inci-
sidered in classifying Army equipments/components.
pient failure by measuring the mechanical or electrical
C-3. Column Entries
characteristics of an item and comparing those
characteristics with prescribed standards.
a. Column f, Group Number. Column 1 lists group
c. Service. Operations required periodically to keep
numbers, the purpose of which is to identify com-
an item in proper operating condition, i.e., to clean
ponents, assemblies, subassemblies, and modules with
(decontaminate), to preserve, to drain, to paint, or to
the next higher assembly.
replenish fuel, lubricants, hydraulic fluids, or compress-
b. Column 2, Component/Assembly. Column 2
ed air supplies.
contains the noun names of components, assemblies,
d. Adjust. To maintain, within prescribed limits, by
subassemblies, and modules for which maintenance is
bringing into proper or exact position, or by setting the
operating characteristics to the specified parameters.
c. Column 3, Maintenance Functions. Column 3
e. Align. To adjust specified variable elements of an
lists the functions to be performed on the item listed in
item to bring about optimum or desired performance.
column 2. When items are listed without maintenance
f. Calibrate. To determine and cause corrections to
functions, it is solely for purpose of having the group
be made or to be adjusted on instruments or test
numbers in the MAC and RPSTL coincide.
measuring and diagnostic equipments used in precision
d. Column 4, Maintenance Category. Column 4
measurement. Consists of comparisons of two in-
specifies, by the listing of a "work time" figure in the
struments, one of which is a certified standard of known
appropriate subcolumns(s), the lowest level of
accuracy, to detect and adjust any discrepancy in the ac-
maintenance authorized to perform the function listed
curacy of the instrument being compared.
in column 3. This figure represents the active time re-
g. Install. The act of emplacing, seating, or fixing
quired to perform that maintenance function at the in-
into position an item, part, module (component or
dicated category of maintenance. If the number or com-
assembly) in a manner to allow the proper functioning
plexity of the tasks within the listed maintenance func-
of the equipment or system.
tion vary at different maintenance categories, ap-
h. Replace. The act of substituting a serviceable like
propriate "work time" figures will be shown for each
type part, subassembly, or module (component or
category. The number of task-hours specified by the
assembly) for an unserviceable counterpart.
"work time" figure represents the average time required
i. Repair. The application of maintenance services
to restore an item (assembly, subassembly, component,
(insect, test, service, adjust, align, calibrate, replace)
module, end item or system) to a serviceable condition
or other maintenance actions (welding, grinding,
under typical field operating conditions. This time in-
riveting, straightening, facing, remachining, or resur-
cludes preparation time, troubleshooting time, and
facing) to restore serviceability to an item by correcting
quality assurance/quality control time in addition to the
time required to perform the specific tasks identified for
specific damage, fault, malfunction, or failure in a part,