Section I. INTRODUCTION
of the comparison of two instruments, one of which is a
certified standard of known accuracy, to detect and
This appendix provides a summary of the maintenance
adjust any discrepancy in the accuracy of the instrument
operations covered in the equipment literature for the
being compared with the certified standard.
KS-19A4 and KS-19B.
It authorizes categories of
maintenance for specific maintenance functions on
g. INSTALL. To set up for use in an operational
repairable items and components and the tools and
environment such as an encampment, site, or vehicle.
equipment required to perform each function. This
appendix may be used as an aid in planning
h. REPLACE. To replace unserviceable items with
serviceable like items.
C-2. Maintenance Functions
Maintenance functions will be limited to and defined as
i. REPAIR. To restore an item to serviceable
condition through correction of a specific failure or
a. INSPECT. To determine serviceability of an
unserviceable condition. This function includes, but is
item by comparing its physical, mechanical, and
not limited to welding, grinding, riveting, straightening,
electrical characteristics with established standards.
and replacement of parts other than the trial and error
replacement of running spare type items such as fuses,
b. TEST. To verify serviceability and to detect
lamps, or electron tubes.
incipient electrical or mechanical failure by use of special
equipment such as gages, meters, etc.
j. OVERHAUL. Normally, the highest degree of
accomplished with external test equipment and does not
maintenance performed by the Army in order to minimize
include operation of the equipment and operator type
time work in process is consistent with quality and
tests using internal meters or indicating devices.
economy of operation. It consists of that maintenance
necessary to restore an item to completely serviceable
c. SERVICE. To clean, to preserve, to charge, and
condition as prescribed by maintenance standards in
to add fuel, lubricants, cooling agents, and air. If it is
technical publications for each item of equipment.
desired that elements, such as painting and lubricating,
Overhaul normally does not return an item to like new,
be defined separately, they may be so listed.
zero mileage, or zero hour condition.
d. ADJUST. To rectify to the extent necessary to
k. REBUILD. The highest degree of materiel
bring into proper operating range.
maintenance. It consists of restoring equipment as
nearly as possible to new condition in accordance with
e. ALIGN. To adjust two or more components or
original manufacturing standards. Rebuild is performed
assemblies of an electrical or mechanical system so that
only when required by operational considerations or
their functions are properly synchronized. This does not
other paramount factors and then only at the depot
include setting the frequency control knob of radio
maintenance category. Rebuild reduces to zero the
hours or miles the equipment, or component thereof, has
been in use.
f. CALIBRATE. To determine the corrections to be
made in the readings of instruments or test equipment
l. SYMBOLS. The uppercase letter placed in the
used in precise measurement. Consists
appropriate column indicates the lowest level at which
that particular maintenance function is to be performed.