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APPENDIX B
MAINTENANCE ALLOCATION
Section I. INTRODUCTION
B-1. General
This appendix provides a summary of the maintenance
operations for TA-885/U. It authorizes categories of
maintenance for specific maintenance functions on
repairable items and components and the tools and
equipment required to perform each function. This
appendix may be used as an aid in planning maintenance
operations.
B-2. Maintenance Function
Maintenance function will be limited to and defined as
follows:
a. Inspect. To determine the serviceability of
an item by comparing its physical, mechanical, and/or
electrical characteristics with established standards
through examination.
b. Test. To verify serviceability and to detect
incipient failure by measuring the mechanical or electrical
characteristics of an item and comparing those
characteristics with prescribed standards.
c. Service. Operations required periodically to
keep an item in proper operating condition, i.e., to clean
(decontaminate), to preserve, to drain, to paint, or to
replenish fuel, lubricants, hydraulic fluids, or compressed
air supplies.
d. Adjust. To maintain, within prescribed limits,
by bringing into proper or exact position, or by setting the
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 measuring and diagnostic equipments used in
precision measurement. Consists of comparisons of two
instruments, one of which is a certified standard of known
accuracy, to detect and adjust any discrepancy in the
accuracy of the instrument being compared.
g. Install. The act of emplacing, seating, or
fixing into position an item, part, module (component or
assembly) in a manner to allow the proper functioning of
the equipment or system.
h. Replace. The act of substituting a
serviceable like type part, subassembly, or module
(component or assembly) for an unserviceable
counterpart.
i. Repair. The application of maintenance
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
correcting specific, damage, fault, malfunction, or failure
in a part, subassembly, module (component or assembly),
end item, or system.
j. Overhaul. That maintenance effort
(service/action) necessary to restore an item to a
completely serviceable/operational condition as
prescribed by maintenance standards (i.e., DMWR) in
appropriate technical publications. Overhaul is normally
the highest degree of maintenance performed by the
Army. Overhaul does not normally return an item to like
new condition.
k. Rebuild. Consists of those services/actions
necessary for the restoration of serviceable equipment to
a like new condition in accordance with original
manufacturing standards. Rebuild is the highest degree
of materiel maintenance applied to Army equipment. The
rebuild operation includes the act of returning to zero
those age measurements (hours, miles, etc.) considered
in classifying Army equipments/components.
B-3. Column Entries
a. Column 1, Group Number. Column 1 lists
group numbers, the purpose of which is to identify
components, assemblies, subassemblies, and modules
with the next higher assembly.
b. Column 2, Component/Assembly. Column 2
contains the noun names of components, assemblies,
subassemblies, and modules for which maintenance is
authorized.
c. Column 3, Maintenance Functions. Column
3 lists the functions to be performed on the item listed in
column 2. When items are listed without maintenance
functions, it is solely for purpose of having the group
numbers in the MAC and RPSTL coincide.
d. Column 4, Maintenance Category. Column 4
specifies, by the listing of a "work time" figure in the
appropriate subcolumn(s), the lowest level of
maintenance authorized to perform the function listed in
column 3. This figure represents the active time required
to perform that maintenance function at the indicated
category of maintenance. If the number or complexity of
the tasks within the listed maintenance function vary at
different maintenance categories, appropriate "work time"
figures will be shown for each category. The number of
taskhours specified by the "work time" figure represents
the average time required to restore an item (assembly,
subassembly, component, module, end item or system) to
a serviceable condition under typical field operating
conditions. This time includes preparation time,
troubleshooting time, and quality assurance/quality control
time in addition to the time required to perform the
specific tasks identified for the maintenance functions
authorized in the maintenance allocation chart.
Subcolumn of column 4 are as follows:
C - Operator/Crew
O - Organizational
B-1