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APPENDIX C
MAINTENANCE ALLOCATION CHART
Section II. INTRODUCTION
C-1. General
a. This section provides a general explanation
of all maintenance and repair functions autho-
rized at various maintenance levels:
b. Section II designates overall responsibility
for the performance of maintenance functions on
the identified end item or component. The imple-
mentation of the maintenance functions upon the
end item or component will be consistent with the
assigned maintenance functions.
c. Section III lists the special tools and test
equipment required for each maintenance func-
tion as referenced from Section II, (Not applica-
ble).
d. Section IV contains supplemental instruc-
tions, explanatory notes and/or illustrations re-
quired for a particular maintenance function.
C-2. Explanation of Columns in Section II
a. Group Number, Column (1). The assembly
group is a numerical group assigned to each as-
sembly in a top down breakdown sequence. The
applicable assembly groups are listed on the
MAC in dissassembly sequence beginning with the
first assembly removal in a top down disassembly
sequence.
b. Functional Group, Column (2). This column
contains a brief description of the components of
each assembly group.
c. Maintenance Functions, Column (3). This
column lists the various maintenance functions
(A through K) and indicates the lowest mainte-
nance category authorized to perform these func-
tions. The symbol designation for the various
maintenance categories are as
C-Operator or crew
O-Organizational maintenance
F-Direct support maintenance
H-General support maintenance
D-Depot maintenance
follows :
The maintenance functions are defined as follows:
A—Inspect: To determine serviceability of an item by
comparing its physical, mechanical, and electrical
characteristics with established standards.
B—Test: To verify serviceability and to detect electri-
cal or mechanical failure by use of test equipment,
C—Service: To clean, to preserve, to charge, to paint,
and to add fuel, lubricants, cooling agents, and air.
D—Adjust: To rectify to the extent necessary, to bring
into proper operating range.
E—Aline: To adjust specified variable elements of an
item to bring to optimum performance.
F—Calibrate: To determine the corrections to be made
in the readings of instruments or teat equipment
used in precise measurement. Consists of the com-
p a r i s o n s o f t w o i n s t r u m e n t s , o n e o f w h i c h i s a
certified standard of known accuracy, to detect and
adjust any discrepancy in the accuracy of the in-
strument being compared with the certified standard.
G - - T o s e t u p f o r u s e i n a n o p e r a t i o n a l e n v i r o n m e nt
such as an emplacement, site, or vehicle.
H—Replace: To replace unserviceable items with serv-
iceable assemblies, subassemblies, or parts.
I—Repair: To restore an item to serviceable condition.
This includes, but is not limited to, inspection, clean-
ing, preserving, adjusting, replacing, welding, riv-
eting, and strengthening.
J—Overhaul: To restore an item to a completely serv-
iceable condition as prescribed by maintenance serv-
iceability standards using the Inspect and Repair
Only as Necessary (IROAN) technique.
K—Rebuild: To restore an item to a standard as nearly
as possible to original or new condition in appear-
ance, performance, and life expectancy. This is ac-
c o m p l i s h e d t h r o u g h c o m p l e t e d i a s s e m b l y o f t h e
item, inspection of all parts or components, repair
or replacement of worn or u n s e r v i c e a b l e e l e m e n ts
( i t e m s ) u s i n g o r i g i n a l m a n u f a c t u r i n g t o l e r a n c es
and specifications, and subsequent reassembly of
the item.
d. Tools and Equipment, Column (4). This col-
umn is provided for referencing by code the spe-
cial tools and test equipment, (Sec III) required
to perform the maintenance functions (Sec II).
e. Remark, Column (6). This column is pro-
vided for referencing by code the remarks (See
IV) pertinent to the maintenance functions.
C-3. Explanation of Columns in Section IV
a. Reference Code. This column consists of two
C-1
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