Section I INTRODUCTION
facing) to restore serviceability to an item by correcting
specific damage, fault, malfunction, or failure in a part,
This appendix provides a summary of the maintenance
subassembly, module (component or assembly), e n d
operations for the AN/TSM126A. It authorizes cate-
item, or system.
gories of maintenance for specific maintenance func-
j. Overhaul. That maintenance effort (service/ac-
tions on repairable items and components and the tools
tion) necessary to restore an item to a completely ser-
and equipment required to perform each function. This
viceable/operational condition as prescribed by mainte-
appendix may be used as an aid in planning mainte-
nance standards (i. e., DMWR) in appropriate technical
publications. Overhaul is normally the highest degree of
D-2. Maintenance Function
maintenance performed by the Army. Overhaul does
not normally return an item to like new condition.
Maintenance functions will be limited to and defined as
k. Rebuild. Consists of those services/actions
a. Inspect. To determine the serviceability of an item
ment to a like new condition in accordance with original
by comparing its physical, mechanical, and/or electrical
manufacturing standards. Rebuild is the highest degree
characteristics with established standards through ex-
of materiel maintenance applied to Army equipment.
The rebuild operation includes the act of returning to
b. Test. To verify serviceability and to detect inci-
zero those age measurements (hours, miles, etc. ) con-
pient failure by measuring the mechanical or electrical
sidered in classifying Army equipments/components.
characteristics of an item and comparing those charac-
teristics with prescribed standards.
D-3. Column Entries
c. Service. Operations required periodically to keep
a. Column 1, Group Number. Column 1 lists group
an item in proper operating condition, i.e., to clean
numbers, the purpose of which is to identify com-
(decontaminate). to preserve, to drain, to paint, or to
ponents, assemblies, subassemblies, and modules with
replenish fuel, lubricants, hydraulic fluids, or compress-
the next higher assembly.
ed air supplies.
b. Column 2, Component/Assembly. Column 2
d. Adjust. To maintain, within prescribed limits, by
contains the noun names of components, assemblies,
bringing into proper or exact position, or by setting the
subassemblies, and modules for which maintenance is
operating characteristics to the specified parameters.
e. Align. To adjust specified variable elements of an
item to bring about optimum or desired performance.
c. Column 3, Maintenance Functions. Column 3
f. Calibrate. To determine and cause corrections to
lists the functions to be performed on the item listed in
be made or to be adjusted on instruments or test
column 2. When items are listed without maintenance
measuring and diagnostic equipment used in precision
functions, it is solely for purpose of having the group
measurement. Consists of comparisons of two in-
numbers in the MAC and RPSTL coincide.
struments, one of which is a certified standard of known
d. Column 4, Maintenance Category. Column 4
accuracy, to detect and adjust any discrepancy in the ac-
specifies, by the listing of a "work time" figure in the
curacy of the instrument being compared.
appropriate subcolumn(s), the lowest level of mainte-
g. Install. The act of emplacing, seating, or fixing in-
nance authorized to perform the function listed in col-
t o position an item, part, module (component or
umn 3. This figure represents the active t i me required to
assembly) in a manner to allow the proper functioning
perform that maintenance function at the indicated
of the equipment or system.
category of maintenance. If the number or complexity
h. Replace. The act of substituting a serviceable like
of the tasks within the listed maintenance function vary
type part, subassembly, or module (component or
at different maintenance categories, appropriate "work
assembly) for an unserviceable counterpart.
time" figures will be shown for each category. The
i. Repair. The application of maintenance services
number of task-hours specified by the "work time"
(inspect, test, service, adjust, align, calibrate, replace)
figure represents the average time required to restore an
o r other maintenance actions (welding, grinding,
itme (assembly, subassembly, component, module, end
riveting, straightening, facing, remachining, or resur-
item or system) to a serviceable condition under typical