APPENDIX C
MAINTENANCE ALLOCATION CHART
Section I. INTRODUCTION
The maintenance functions are defined as follows:
C-1. General
A--Inspect: To determine serviceability of an item by
a. This section provides a general explanation of
comparing its physical, mechanical, and electrical
all maintenance and repair functions authorized.
characteristics with established standards.
at various maintenance levels.
B--Test: To verify serviceability and to detect electri-
cal or mechanical failure by use of test equipment.
b. Section II designates overall responsibility
C--Service: To clean, to preserve, to charge, to paint,
for the performance of maintenance functions on
and to add fuel, lubricants, cooling agents, and air.
the identified end item or component. The imple-
D--Adjust: To rectify to the extent necessary to bring
into proper operating range.
mentation of the maintenance functions upon the
E--Align: To adjust specified variable elements of an
end item or component will be consistent with the
item to bring to optimum performance,
assigned maintenance functions.
F--Calibrate: To determine the corrections to be made
in the readings of instruments or test equipment
c. Section III--Not applicable.
used in precise measurement. Consists of the com-
d. Section IV--Not applicable.
parisons of two instruments, one of which is a certi-
fied standard of known accuracy, to detect and
adjust any discrepancy in the accuracy of the in-
C-2. Explanation of Columns in Section II
strument being compared with the certified standard.
G--Install: To setup for use in an operational environ-
a. Group Number, Column (1). The functional
ment such as an emplacement, site, or vehicle.
group is a numerical group set up on a functional
H--To replace unserviceable items with serviceable as-
basis. The applicable functional grouping indexes
semblies, subassemblies, or parts.
(obtained from TB 750-93-1, Functional Group-
I--Repair: To restore an item to serviceable condition.
ing Codes) are listed on the MAC in the appropri-
This includes, but is not limited to, inspection, clean-
ing, preserving, adjusting, replacing, welding, rivet-
ate numerical sequence. These indexes are nor-
ing, and strengthening.
mally set up in accordance with their function and
J--Overhaul: To restore an item to a completely serv-
proximity to each other.
iceable condition as prescribed by maintenance serv-
iceability standards using the Inspect and Repair
b. Functional Group, Column (2). This column
Only as Necessary (IROAN) technique.
contains a brief description of the components of
K--Rebuild: To restore an item to a standard as nearly
each functional group.
as possible to original or new condition in appear-
ance, performance and life expectancy. This is
c. Maintenance Functions, Column (3). This
accomplished through complete disassembly of the
column lists the various maintenance functions (A
item, inspection of all parts or components, repair
through K) and indicates the lowest maintenance
or replacement of worn or unserviceable elements
(items) using original manufacturing tolerances
category authorized to perform these functions.
and specifications, and subsequent reassembly of
the item.
The symbol designations for the various mainte-
nance categories are as follows:
d. Tools and Equipment, Column (4). Not appli-
O--Organizational maintenance
cable.
F--Direct support maintenance
e. Remarks, Column (5). Not applicable.
H--General support maintenance
