TM 11-5815-206-12 /TO 31W4-2PGC1-61
Section 1. INTRODUCTION
i. Repair. T h e a p p l i c a t i o n o f m a i n t e n a n c e
s e r v i c e s (inspect, test, service, a d j u s t , align,
This appendix provides a summary of the main-
calibrate, replace) or other maintenance actions
tenance operations f o r t h e A N / P G C - 1 a n d
(welding, grinding, riveting, straightening,
facing, remachining, o r resurfacing) to restore
t e n a n c e for specific m a i n t e n a n c e functions on
s e r v i c e a b i l i t y to an item by correcting specific
reparable items and components and the tools and
damage, fault, malfunction, or failure in a part,
equipment required to perform each function. This
subassembly, module/component /assembly, end
a p p e n d i x may be used as an aid in planning
item or system.
j. Overhaul. That periodic maintenance effort
C-2. Maintenance Function
(service/action) necessary to restore an item to a
Maintenance functions will be limited to and
c o m p l e t e l y serviceable/operational condition as
defined as follows:
prescribed by maintenance standards (e.g.,
a. Inspect. To determine the serviceability of an
D M W R ) in appropriate technical publications.
item by comparing its physical, mechanical, and/
Overhaul is normally the highest degree of
m a i n t e n a n c e performed by the Army. Overhaul
standards through examination.
d o e s not normally return an item to like-new
b. Test. To verify serviceability and to detect
incipient failure by measuring the mechanical or
k. Rebuild. Consists of those services/actions
electrical characteristics of an item and comparing
n e c e s s a r y for the restoration of unserviceable
those characteristics with prescribed standards.
equipment to a like-new condition in accordance
c. Service. Operations required periodically to
with original manufacturing standards. Rebuild is
keep an item in proper operating condition, i.e., to
the highest degree of materiel maintenance applied
c l e a n , preserve, drain, p a i n t , or to replenish
to Army equipment. The rebuild operation includes
fuel/lubricants/hydraulic fluids or compressed air
measurements (hours, miles, etc.) considered in
d. Adjust. M a i n t a i n w i t h i n prescribed limits
classifying Army equipment/components.
by bringing into proper or exact position, or by
C-3. Column Entries
setting the operating characteristics to the
a. Column 1, Group Number. C o l u m n 1 lists
group numbers, the purpose of which is to identify
e. Align. To adjust specified variable elements
components, assemblies, subassemblies and
o f an item to about optimum or desired per-
modules with the next higher assembly.
b. Column 2, Component/Assembly. Column 2
f. Calibrate. To determine and cause corrections
contains the noun names of components, assem-
to be made or to be adjusted on instruments or
and modules for which
test measuring and diagnostic equipment used in
maintenance is authorized.
precision measurement. Consists of the comparison
c. Column 3, Maintenance Functions. Column 3
of two instruments, one of which is a certified
lists the functions to be performed on the item
standard of known accuracy, to detect and adjust
listed in clumn 2.
any discrepancy in the accuracy of the instrument
d. Column 4, Maintenance Category. Column 4
specifies, by the listing of a "worktime" figure in
g. Install. The act of emplacing, seating, or
the appropriate subcolumn(s), the lowest level of
fixing into position an item, part, module (com-
maintenance authorized to perform the function
p o n e n t or assembly) in a manner to allow the
l i s t e d in column 3. This figure represents the
proper functioning of the equipment/system.
active time required to perform that maintenance
h. Replace. The act of substituting a serviceable
function at the indicated category of maintenance.
like-type part, subassembly, model (component or
If the number or complexity of the tasks within
assembly) for an unserviceable counterpart.