M A I N T E N A N C E ALLOCATION CHART
lubricating, be defined separately, they may be
a. This section provides a general explanation of
D-Adjust. To rectify to the extent necessary to
all maintenance and repair functions authorized at
bring into proper operating range.
various maintenance levels.
E-Align. To adjust specified variable elements of
b. Section II designates overall responsibility for
an item to bring to optimum performance.
the performance of maintenance functions on the
F-Calibrate. To determine the corrections to be
identified end item or component. The im-
made in the readings of instruments or test
plementation of the maintenance functions upon
equipment u s e d i n p r e c i s e m e a s u r e m e n t .
the end item or component will be consistent with
Consists of the comparison of two instruments,
the assigned maintenance functions.
one of which is a certified standard of known
c. Section III lists the special tools and test
accuracy, to detect and adjust any discrepancy
equipment required for each maintenance function
in the accuracy of the instrument being
as referenced from Section II.
compared with the certified standard.
d. Section IV contains supplemental instructions
G - I n s t a l l . To set up for use in an operational
o r explanatory notes required for a particular
environment such as an emplacement, site, or
B-2. Explanation of Columns in Section II
H-Replace. To replace unserviceable items with
a. Group Number, Column (1). The assembly
serviceable like items.
group number is a numerical group assigned to
I - R e p a i r . Those maintenance operations
each assembly. The assembly groups are listed on
necessary to restore an item to serviceable
the MAC in disassembly sequence beginning with
c o r r e c t i o n o f material
the first assembly removed in a top down
damage or a specific failure. Repair may be
accomplished at each level of maintenance.
b. Assembly Group, Column (2). This column
J-Overhaul. Normally, the highest degree of
contains a brief description of the components of
maintenance performed by the Army in order
each assembly group.
to minimize time work is in process consistent
c. Maintenance Functions, Column (3). T h i s
w i t h quality and economy of operation. It
column lists the maintenance functions (A through
c o n s i s t s of that maintenance n e c e s s a r y to
K). The upper case letter placed in the appropriate
restore an i t e m to completely serviceable
c o l u m n indicates the lowest maintenance level
as prescribed by maintenance
authorized to perform these functions. The symbol
standards in technical publications for each
designations for the various maintenance levels are
item of equipment. Overhaul normally does not
return an item to like new, zero mileage, or zero
C-Operator or crew
K - R e b u i l d . The highest degree of materiel
F-Direct support maintenance
maintenance. It consists of restoring equipment
as nearly as possible to new condition in ac-
The maintenance functions are defined as follows:
cordance with original manufacturing stand-
A-Inspect. To determine serviceability of an item
Rebuild is performed only when
by comparing its physical, mechanical, and
required by operational considerations or other
electrical characteristics with established
paramount factors and then onIy at the depot
maintenance level. Rebuild reduces to zero the
B - T e s t . To verify serviceability and to detect
hours or miles the equipment, or component
electrical or mechanical failure by use of test
thereof, has been in use.
d. Tools and Equipment, Column (4). T h i s
C-Service. To clean, to preserve, to charge, and to
column is provided for referencing by c o d e t h e
add fuel, lubricants, cooling agents, and air. (If
it is desired that elements, such as painting and