TM 11-6625-255-14/TO 33A1-13-170-1
Section I. INTRODUCTION
i. Repair. The application of maintenance ser-
vices (inspect, test, service, adjust, align, cali-
This appendix provides a summary of the main-
brate, replace) or other maintenance actions
t e n a n c e operations for the TS-723(*)/U. It
authorizes categories of maintenance for specific
(welding, grinding, riveting, straightening, fac-
ing, remachining, o r resurfacing) to restore
maintenance functions on repairable items and
components and the tools and equipment required
serviceability to an item by correcting specific
to perform each function. This appendix may be
damage, fault, malfunction, or failure in a part,
used as an aid in planning maintenance opera-
subassembly, module/component/assembly, end
item or system.
j. Overhaul. That periodic maintenance effort
C2. Maintenance Function
(service/action) necessary to restore an item to a
Maintenance functions will be limited to and de-
completely serviceable/operational condition as
fined as follows:
p r e s c r i b e d by maintenance standards (e.g.,
a. Inspect. To determine the serviceability of
DMWR) in appropriate technical publications.
an item by comparing its physical, mechanical,
Overhaul is normally the highest degree of main-
and /or electrical characteristics with established
tenance performed by the Army. Overhaul does
standards through examination.
not normally return an item to like-new condition.
b. Test. To verify serviceability and to detect
k. Rebuild. Consists of those services/actions
incipient failure by measuring the mechanical or
electrical characteristics of an item and comparing
equipment to a like-new condition in accordance
those characteristics with prescribed standards.
with original manufacturing standards. Rebuild is
c. Service. Operations required periodically to
the highest degree of materiel maintenance ap-
keep an item in proper operating condition, i.e., to
plied to Army equipment. The rebuild operation
clean, preserve, drain, paint, or to replenish
includes the act of returning to zero those age
fuel/lubricants/hydraulic fluids or compressed air
measurements (hours, miles, etc. ) considered in
classifying Army equipment/components.
d. Adjust. Maintain within prescribed limits
by bringing into proper or exact position, or by
C-3. Column Entries
a. Column 1, Group Number. Column 1 lists
setting the operating characteristics to the speci-
group numbers, the purpose of which is to identi-
fy components, assemblies, subassemblies and
e. Align. To adjust specified variable elements
modules with the next higher assembly.
of an item to about optimum or desired per-
b. Column 2, Component/Assembly. Column 2
contains the noun names of components, as-
f. Calibrate. To determine and cause cor-
semblies, subassemblies, and modules for which
rections to be made or to be adjusted on instru-
maintenance is authorized.
ments or test measuring and diagnostic equip-
c. Column 3, Maintenance Functions. Column
ment used in precision measurement. Consists of
3 lists the functions to be performed on the item
the comparison of two instruments, one of which
listed in column 2.
is a certified standard of known accuracy, to de-
d. Column 4, Maintenance Category. Column 4
tect and adjust any discrepancy in the accuracy of
specifies, by the listing of a "worktime" figure in
the instrument being compared.
the appropriate subcolumn(s), the lowest level of
g. Install. The act of emplacing, seating, or
maintenance authorized to perform the function
fixing into position an item, part, module (com-
listed in column 3. This figure represents the ac-
ponent or assembly) in a manner to allow the pro-
tive time required to perform that maintenance
per functioning of the equipment/system.
h. Replace. The act of substituting a service-
function at the indicated category of main-
able like-type part, subassembly, model (com-
tenance. If the number or complexity of the tasks
within the listed maintenance function vary at
ponent or assembly) for an unserviceable counter-
different maintenance categories, appropriate