APPENDIX C
MAINTENANCE ALLOCATION CHART
Section I. INTRODUCTION
ical, and electrical characteristics with estab-
C-1. General
lished standards.
a. This section provides a general explanation
B - TEST. To verify serviceability and to detect
of all maintenance and repair functions author-
electrical or mechanical failure by use of test
ized at various maintenance levels.
equipment.
b. Section II designates overall responsibility
C - SERVICE. To clean, to preserve, to charge,
for the performance of maintenance functions on
to paint, and to add fuel, lubricants, cooling
the identified end item or component. The im-
agents, and air.
plementation of the maintenance functions upon
the end item or component will be consistent with
D - ADJUST. To rectify to the extent necessary
to bring into proper operating range.
the assigned maintenance functions.
E - ALIGN. To adjust specified variable ele-
c. Section III. Not applicable.
ments of an item to bring to optimum per-
d. Section IV contains supplemental instruc-
formance.
tions, explanatory notes and//or illustrations re-
quired for a particular maintenance function.
F - CALIBRATE. To determine the corrections
to be made in the readings of instruments
or test equipment used in precise measure-
C-2. Explanation of Columns in Section II
ment. Consists of the comparisons of two
a. Group Number. Column 1. The functional
instruments, one of which is a certified stand-
group is a numerical group set up on a functional
ard of known accuracy, to detect and adjust
basis. The applicable functional grouping indexes
any discrepancy in the accuracy of the in-
(obtained from TB 750-93-1, Functional Group-
strument being compared with the certified
ing Codes) are listed on the MAC in the appro-
standard.
priate numerical sequence. These indexes are
G - INSTALL. To set up for use in an opera-
normally set up in accordance with their func-
tional environment such as an emplacement,
tion and proximity to each other.
site, or vehicle.
b. Functional Group. Column 2. This column
H - REPLACE. To replace unserviceable items
contains a brief description of the components of
with serviceable assemblies, subassemblies,
each functional group.
or parts.
c. Maintenance Functions. Column 3. This col-
I - REPAIR. To restore an item to serviceable
umn lists the various maintenance functions (A
condition. This includes, but is not limited
through K) and indicates the lowest maintenance
to, inspection, cleaning, preserving, adjust-
category authorized to perform these functions.
ing, replacing, welding, riveting, a n d
The symbol designations for the various mainte-
strengthening.
nance categories are as follows:
C - Operator or crew
J - OVERHAUL. To restore an item to a com-
- Organizational maintenance
pletely serviceable condition as prescribed by
F - Direct support maintenance
maintenance serviceability standards using
H - General support maintenance
the Inspect and Repair Only as Necessary
(IROAN) technique.
The maintenance functions are defined as follows:
K - REBUILD. To restore an item to a stand-
A - INSPECT. To determine serviceability of
ard as nearly as possible to original or new
an item by comparing its physical, mechan-
C-1
AGO 20049A
