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APPENDIX A REFERENCES - TM-11-5840-270-24-10022
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TM-11-5840-270-24-1 Indicator lD-48A/ARN Manual
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Explanation of Format of Table 1, Tool and Test Equipment Requirements
TM 11-5840-270-24-1
APPENDIX B
MAINTENANCE
ALLOCATION
SECTION I. INTRODUCTION
h. Replace. To replace unserviceable items with
B-1. General
serviceable like items.
This appendix provides a summary of the main-
i. Repair. To restore an item to serviceable
tenance operations covered in the equipment
condition through correction of a specific failure or
literature  for  the  AN/APM-322.  It  authorizes
unserviceable condition. This function includes,
categories of maintenance for specific maintenance
but is not limited to welding, grinding, riveting,
functions on repairable items and components and
straightening, and replacement of parts other than
the tools and equipment required to perform each
the trial and error replacement of running spare
function. This appendix may be used as an aid in
type items such as fuses, lamps, or electron tubes.
planning maintenance operations.
j. Overhaul. Normally, the highest degree of
B-2. Maintenance Functions
maintenance performed by the Army in order to
Maintenance functions will be limited to and
minimize time work in process is consistent with
defined as follows:
quality and economy of operation. It consists of
a. Inspect. To determine serviceability of an item
that maintenance necessary to restore an item to
by comparing its physical, mechanical, and elec-
completely serviceable condition as prescribed by
trical characteristics with established standards.-
maintenance standards in technical publications for
b. Test. To verify serviceability and to detect
each item of equipment. Overhaul normally does
incipient electrical or mechanical failure by use of
not return an item to like new, zero mileage, or zero
special equipment such as gages, meters, etc. This
hour condition.
is accomplished with external test equipment and
k. Rebuild. The highest degree of materiel
does not include operation of the equipment and
maintenance. It consists of restoring equipment as
operator type tests using internal meters or in-
nearly as possible to new condition in accordance
dicating devices.
with original manufacturing standards. Rebuild is
c. Service. To clean, to preserve, to charge, and to
performed only when required by operational
add fuel, lubricants, cooling agents, and air. If it is
considerations or other paramount factors and then
desired that elements,  s u c h as painting and
only at the depot maintenance category. Rebuild
lubricating, be defined separately, they may be so
reduces to zero the hours or miles the equipment, or
listed.
component thereof, has been in use.
d. Adjust. To rectify to the extent necessary to
l. Symbols. The uppercase letter placed in the
bring into proper operating range.
appropriate column indicates the lowest level at
e. Align. To adjust two or more components or
which that particular maintenance function is to be
assemblies of an electrical or mechanical system so
performed.
that their functions are properly synchronized. This
B-3. Explanation of Format
does not include setting the frequency control knob
a. Column 1, Group Number. (Not applicable.)
of radio receivers or transmitters to the desired
b. Column 2, Functional Group. Column 2 lists
the  names
of  c o m p o n e n t s ,
assemblies,
f. Calibrate. To determine the corrections to be
subassemblies, and modules on which maintenance
made in the readings of instruments or test
is authorized.
equipment used in precise measurement. Consists
c. Column 3, Maintenance Functions. Column 3
of the comparison of two instruments, one of which
lists the maintenance category at which per-
is a certified standard of known accuracy, to detect
formance of the specific maintenance function is
and adjust any discrepancy in the accuracy of the
authorized. Authorization to perform a function at
instrument being compared with the certified
any category also includes authorization to perform
standard.
that function at higher categories. The codes treed
g. Install. To set up for use in an operational
represent the various maintenance categores as
environment such as an encampment, site, or
follows:
vehicle.
B-1

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