(Army) MAINTENANCE ALLOCATION
grinding, riveting, straightening, and replacement of parts
other than the trial and error replacement of running spare
This appendix provides a summary of the maintenance oper-
type items such as fuses, lamps, or electron tubes.
ations covered in the equipment literature for Control,
j. Overhaul. Normally, the highest degree of mainte-
Transponder Set C-6280A(P)/APX. It authorizes categories
nance performed by the Army. It consists of that main-
of maintenance for specific maintenance functions on re-
tenance necessary to restore an item to completely service-
pairable items and components and the tools and equipment
able condition as prescribed by maintenance standards in
required to perform each function. This appendix may be
technical publications for each item of equipment. Overhaul
used as an aid in planning maintenance operations.
normally does not return an item to like new, zero mileage,
C2. MAINTENANCE FUNCTIONS.
or zero hour condition.
Maintenance functions will be limited to and defined as
k. Rebuild. The highest degree of materiel maintenance.
It consists of restoring equipment as nearly as possible to
new condition in accordance with original manufacturing
a. Inspect. To determine serviceability of an item by
standards. Rebuild is performed only when required by
comparing its physical, mechanical, and electrical character-
operational considerations or other paramount factors and
istics with established standards.
then only at the depot maintenance category. Rebuild re-
b. Test. To verify serviceability and to detect incipient
duces to zero the hours or miles the equipment, or compo-
electrical or mechanical failure by use of special equipment
nent thereof, has been in use.
such as gages, meters, etc. This is accomplished with exter-
l. Symbols. The uppercase letter placed in the appropri-
nal test equipment and does not include operation of the
ate column indicates the lowest level at which that particu-
equipment and operator type tests using internal meters or
lar maintenance function is to be performed.
c. Service. To clean, to preserve, to charge, and to add
C3. EXPLANATION OF FORMAT.
fuel, lubricants, cooling agents, and air. If it is desired that
C-4. GROUP NUMBER, COLUMN 1. Column 1 lists group
elements, such as painting and lubricating, be defined sepa-
numbers, the purpose of which is to identify components,
rately, they may be so listed.
assemblies, subassemblies, and modules with the next higher
d. Adjust. To rectify to the extent necessary to bring
into proper operating range.
C5. FUNCTIONAL GROUP, COLUMN 2. Column 2
e. Adjust. To adjust two or more components or assem-
lists the noun names of components, assemblies, subassem-
blies of an electrical or mechanical system so that their
blies, and modules on which maintenance is authorized.
functions are properly synchronized. This does not include
C6. MAINTENANCE FUNCTIONS, COLUMN 3. Column
setting the frequency control knob of radio receivers or
3 lists the maintenance category at which performance of
the specific maintenance function is authorized. Authoriza-
tion to perform a function at any category also includes
f. Calibrate. To determine the corrections to be made in
authorization to perform that function at higher categories.
the readings of instruments or test equipment used in pre-
The codes used represent the various maintenance categories
cise measurement. Consists of the comparison of two instru-
ments, one of which is a certified standard of known accu-
racy, to detect and adjust any discrepancy in the accuracy
of the instrument being compared with the certified standard
g. Install. To set up for use in an operational environ-
ment such as an encampment, site, or vehicle.
Direct Support Maintenance
General Support Maintenance
h. Replace. To replace unserviceable items with service-
able like items.
C7. TOOLS AND TEST EQUIPMENT, COLUMN 4. Col-
i. Repair. To restore an item to serviceable condition
umn 4 specifies, by code, those tools and test equipment
through correction of a specific failure or unserviceable con-
required to perform the designated function. The numbers
dition. This function includes but is not limited to welding,