TM 11-6140-203-14-4&P
APPENDIX D
MAINTENANCE ALLOCATION
Section I. INTRODUCTION
like type part, subassembly, or module (component or
D-1.
General
assembly) for an unserviceable counterpart i. Repair.
The application of maintenance services (insect, test,
This appendix provides a summary of the maintenance
service, adjust, align, calibrate,
replace) or other
operations for BB-693A/U. It authorizes categories of
maintenance actions (welding,
grinding, riveting,
maintenance for specific maintenance functions on
straightening, facing, remachining, or resurfacing) to
repairable items and components and the tools and
restore serviceability to an item by correcting specific
equipment required to perform each function. This
damage,
fault, malfunction, or failure in a part,
appendix may be used as an aid in
planning
subassembly, module (component or assembly), end
maintenance operations.
item, or system.
j. Overhaul
That
maintenance
effort
D-2.
Maintenance Function
(service/action) necessary to restore an item to a
completely
serviceable/operational
condition
as
Maintenance functions will be limited to and defined as
prescribed by maintenance standards (i.e., DMWR) in
follows:
appropriate technical publications. Overhaul is normally
a. Inspect To determine the serviceability of an
the highest degree of maintenance per formed by the
item by comparing its physical, mechanical, and/or
Army. Overhaul does not normally return an item to like
electrical characteristics with established standards
new condition.
through examination.
i. Rebuild Consists of those services/actions
b. Test. To verify serviceability and to detect
necessary for the restoration of unserviceable
incipient failure by measuring the mechanical or
equipment to a like new condition in accordance with
electrical characteristics of an item and comparing those
original manufacturing standards.
Rebuild is the
characteristics with prescribed standards.
highest degree of materiel maintenance applied to Army
c. Service. Operations required periodically to
equipment. The rebuild operation includes the act of
keep an item in proper operating condition, i.e., to clean
returning to zero those age measurements (hours,
(decontaminate), to preserve, to drain, to paint, or to
miles,
etc.)
considered
in
classifying
Army
replenish fuel, lubricants, hydraulic
fluids, or
equipments/components.
compressed air supplies.
d Adjust. To maintain, within prescribed limits, by
D-3.
Column Entries
bringing into proper or exact position, or by setting the
operating characteristics to the specified parameters.
a Column 1, Group Number. Column 1 lists group
e. Align To adjust specified variable elements of
numbers, the purpose of which is to identify
an item to bring about optimum or desired performance.
components,
assemblies,
subassemblies,
and
f. Calibrate. To determine and cause corrections
modules with the next higher assembly.
to be made or 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,
measurement.
Consists of comparisons of
two
subassemblies, and modules for which maintenance is
instruments, one of which is a certified standard of
authorized.
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 listed in
g. Install. The act of emplacing, seating, or fixing
column 2. When items are listed without maintenance
into position an item, part, module (component or
functions, it is solely for purpose of having the group
assembly) in a manner to allow the proper functioning of
numbers in the MAC and RPSTL coincide.
the equipment or system.
d Column 4, Maintenance Category.
Column 4
k Replace. The act of substituting a serviceable
D-1
