C 2, TM 9-6625-1754-14
Section L INTRODUCTION
one of which is a certified standard of known
accuracy, to detect and adjust any discrepancy in
This appendix provides a summary of the
the accuracy of the instrument being compared
maintenance operations covered in the equip-
with the certified standard.
m e n t literature. It authorizes categories of
g. Install. To set up for use in an operational
maintenance for specific maintenance functions
environment such as an encampment, site, o r
on repairable items and components and the
tools and equipment required to perform each
h. Replace. To replace unserviceable items
function. This appendix may be used as an aid in
with serviceable like item.
planning maintenance operations.
i. Repair. To restore an item to serviceable
B-2. Maintenance Functions.
condition through correction of a specific failure
Maintenance functions will be limited to and
of unserviceable condition. This function in-
defined as follows:
cludes, but is not limited to welding, grinding,
a. Inspect. To determine serviceability of an
riveting, straightening, and replacement of parts
item by comparing its physical, mechanical, and
other than the trial and error replacement of
e l e c t r i c a l characteristics with established
running spare type items such as fuses, lamps, or
b. Test. To verify serviceability and to detect
j. Overhaul. Normally, the highest degree of
incipient electrical or mechanical failure by use
maintenance performed by the Army in order to
of special equipment such as gages, meters, etc.
minimize time work in process is consistent with
This is accomplished with external test equip-
quality and economy of operation. It consists of
ment and does not include operation of the
that maintenance necessary to restore an item to
equipment and operator type tests using internal
completely serviceable condition as prescribed
meters or indicating devices.
by maintenance standards in technical
c. Service. To clean, to preserve, to charge,
publications f o r each item of equipment.
Overhaul normally does not return an item to
air. If it is desired that elements, such as painting
like new, zero mileage, or zero hour condition.
and lubricating, be defined separately, they may
k. Rebuild. The highest degree of materiel
be so listed.
maintenance. It consists of restoring equipment
d. Adjust. To rectify to the extent necessary to
as nearly as possible to new condition in ac-
bring into proper operating range.
cordance with original manufacturing standards.
e. Align. To adjust two or more components or
Rebuild is performed only when required by
assemblies of an electrical or mechanical system
operational considerations or other paramount
so that their functions are properly synchronized.
factors and then only at the depot 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
L Symbols. The uppercase letter placed in the
be made in the readings of instruments or
appropriate column indicates the lowest level at
teat equipment used in precise measurement.
which that particular maintenance function is to
Consists of the comparison of two instruments,