MAINTENANCE ALLOCATION CHART
Section I. INTRODUCTION
C-Operator or crew
C-1. General
O--Organizational maintenance
a. This section provides a general explana-
F--Direct support maintenance
tion of all maintenance and repair functions
H--General support maintenance
authorized at various maintenance levels.
The maintenance functions are defined as fol-
lows:
b Section II designates overall responsibility
A--Inspect: To determine serviceability of
for the performance of maintenance functions
an item by comparing its physical,
on the identified end item or component. The
mechanical, and electrical characteris-
implementation of the maintenance functions
tics with established standards.
upon the end item or component will be con-
B--Test: To verify serviceability and to
sistent with the assigned maintenance f unc-
detect electrical or mechanical failure
tions.
by use of test equipment.
c. Section III not applicable.
C-Service: To clean, to preserve, to
charge, to paint, and to add fuel, lubri-
cants, cooling agents, and air.
tions, explanatory notes and/or illustrations
required for a particular maintenance func-
D--Adjust: To rectify to the extent neces-
sary to bring into proper operating
tion.
range.
E--Aline: To adjust specified variable ele-
C-2. Explanation of Columns in Section II
ments of an item to bring to optimum
a. Group Number, Column (1). The func-
performance.
tional group is a numerical group set up on a
F--Calibrate: To determine the corrections
functional basis. The applicable functional
to be made in the readings of instru-
grouping indexes (obtained from TB 75093-
ments or test equipment used in precise
1, Functional Grouping Codes) are listed on
measurement. Consists of the compar-
the MAC in the appropriate numerical se-
isons of two instruments, one of which
quence. These indexes are normally set up in
is a certified standard of known accu-
accordance with their function and proximity
racy of the instrument being compared
to each other.
with the certified standard.
b. Functional Group, Column (2). This col-
G-Install: To set up for use in an opera-
umn contains a brief description of the compo-
tional environment such as an emplace-
nents of each functional group.
ment, site, or vehicle.
c. Maintenance Functions, Column (3). This
H--Replace: To replace unserviceable items
column lists the various maintenance functions
with serviceable assemblies, subassem-
(A through K) and indicates the lowest main-
blies, or parts.
tenance category authorized to perform these
I--Repair: To restore an item to service-
functions. The symbol designations for the
able condition. This includes, but is not
various maintenance categories are as follows:
limited to, inspection, cleaning, preserv-
C-1
