APPENDIX B
M A I N T E N A N C E ALLOCATION CHART
B-1. General
E--
ALIGN : To adjust specified variable elements of an
item to bring to optimum performance.
a. This section provides a general explanation of
F--
CALIBRATE: To determine the corrections to be
all maintenance and repair functions authorized at
made in the readings of instruments or test equip-
various maintenance levels.
ment used in precise measurement. Consists of the
b. Section II designates overall responsibility for
comparison of two instruments, one of which is a
certified standard of known accuracy, to detect and
the performance of maintenance functions on the
adjust any discrepancy in the accuracy of the in-
identified end item or component. The im-
strument being compared with the certified standard.
p l e m e n t a t i o n of the maintenance functions upon
G--
INSTALL: To set up for use in an operational
the end item or component will be consistent with
environment such as an emplacement, site, or vehicle.
H--
REPLACE : To replace unserviceable items with
the assigned maintenance functions.
serviceable like items.
c. Section III -- Not applicable.
I--
REPAIR: Those maintenance operations necessary
d. Section IV contains supplemental instructions,
to restore an item to serviceable condition through
explanatory notes and /or illustrations required for
correction of material damage or a specific failure.
a particular maintenance function.
Repair may be accomplished at each category of
maintenance.
B-2. Explanation of Columns in Section II
J
O V E R H A U L : Normally, the highest degree of
a. Group Number, Column (1). The assembly
maintenance performed by the Army in order to
minimize time work in process is consistent with
group is a numerical group assigned to each
quality and economy of operation. It consists of that
assembly in a top down breakdown sequence. The
maintenance necessary to restore an item to com-
applicable assembly groups are listed on the MAC in
pletely serviceable condition as prescribed by
disassembly sequence beginning with the first
maintenance standards in technical publications for
a s s e m b l y removed in a t o p d o w n d i s a s s e m b l y
each item of equipment. Overhaul normally does not
return an item to like new, zero mileage, or zero hour
sequence.
condition.
b. Assembly Group, Column (2). This column
K--
R E B U I L D : The highest degree of materiel
contains a brief description of the components of
maintenance. It consists of restoring equipment as
each assembly group.
nearly as possible to new condition in accordance
c. Maintenance Functions, Column {3). T h i s
with original manufacturing standards. Rebuild is
performed only when required by operational con-
column lists the various maintenance functions (A
siderations or other paramount factors and then only
through K). The lowest maintenance category
at the depot maintenance category. Rebuild reduces
authorized to perform these functions are indicated
to zero the hours or miles the equipment, or com-
by a symbol in the appropriate column. The symbol
ponent thereof, has been in use.
designations for the various maintenance categories
d. Tools and Equipment, Column (4). T h i s
are as follows:
c o l u m n is provided for referencing by code the
C
--
Operator or crew
special tools and test equipment (Sec. III) required
O
--
Organizational maintenance
to perform the maintenance functions (Sec. H).
F
--
Direct support maintenance
e. Remarks, Column (5). This column is provided
H
--
General support maintenance
for referencing by code the remarks (Sec. IV)
D
--
Depot maintenance
pertinent to the maintenance functions.
T h e maintenance functions are defined as follows:
INSPECT: To determine serviceability of an item
A--
B-3. Explanation of Columns in Section IV
by comparing its physical, mechanical, and electrical
a. Reference Code. This column consists of two
characteristics with established standards.
l e t t e r s separated by a dash, both of which are
T E S T : To verify serviceability and to detect
B--
electrical or mechanical failure by use of test
references to section II. The first letter references
equipment.
column (5) and the second letter references a
C--
SERVICE : To clean, to preserve, to charge, and to
maintenance function, column (3), A through K.
add fuel, lubricants, cooling agents, and air. If it is
b. Remarks. T h i s c o l u m n l i s t s i n f o r m a t i o n
desired that elements, such as painting and
pertinent to the maintenance function being per-
lubricating, be defined separately, they may be so
listed.
formed, as indicated on the MAC, section II.
D
ADJUST: To rectify to the extent necessary to bring
into proper operating range.
B-1
