TM 5-3820-233-12/2
APPENDIX B
MAINTENANCE ALLOCATION CHART
Section I. INTRODUCTION
into proper operating range.
B-1. General
E--Align. To adjust specified variable elements of an
a. This section provides a general explanation of all
item to bring to optimum performance.
maintenance and repair functions authorized at various
F--Calibrate. To determine the corrections to be made in
maintenance levels.
the reading of instruments or test equipment used in
precise measurement. Consists of the comparison of two
performance of maintenance functions on the identified end
instruments, one of which is a certified standard of known
item or component.
The implementation of the
accuracy, to detect and adjust any discrepancy in the
maintenance functions upon the end item or component will
accuracy of the instrument being compared with the
be consistent with the assigned maintenance functions.
certified standard.
c. Section III (Special Tools and Test Equipment).Not
G--Install.
To set up for use in an operational
applicable.
environment such as emplacement, site, or vehicle.
d. Section IV (Supplemental Instructions). Not applicable.
H--Replace.
To replace unserviceable items with
B-2. Explanation of Columns in Section II
serviceable like items.
a. Group Number, Column (1).The assembly group is a
I--Repair. Those maintenance operations necessary to
numerical group assigned to each assembly in a functional
restore an item to serviceable condition through correction
basis. The applicable assembly groups are listed on the
of material damage or a specific failure. Repair may be
MAC in disassembly sequence beginning with the first
accomplished at each category of maintenance.
assembly removed in a top down disassembly sequence.
J--Overhaul.
Normally, the highest degree of
b. Assembly Group, Column (2).This column contains
maintenance performed by the Army in order to minimize
a brief description of the components of each assembly
time work in process is consistent with quality and economy
group.
of operation. It consists of that maintenance necessary to
c. Maintenance Functions, Column (3).This column
restore an item to completely serviceable condition as
lists the various maintenance functions (A through K) and
prescribed by maintenance standards in technical
indicates the lowest maintenance category authorized to
publications for each item of equipment. Overhaul normally
perform these functions. The symbol designations for the
does not return an item to like new, zero mileage, or zero
various maintenance categories are as follows:
hour condition.
C-Operator or crew
K--Rebuild.
The highest degree of materiel
O-Organizational maintenance
maintenance. It consists of restoring equipment as nearly
F-Direct support maintenance
as possible to new condition in accordance with original
H-General support maintenance
manufacturing standards. Rebuild is performed only when
D-Depot maintenance
required by operational considerations or other paramount
The maintenance functions are defined as follows:
factors and then only at the depot maintenance category.
A--Inspect. To determine serviceability of an item by,
Rebuild reduces to zero the hours or miles the equipment,
comparing its physical, mechanical, and electrical
or component thereof, has been in use.
characteristics with established standards.
d. Tools and Equipment, Column (4). This column is
B--Test. To verify serviceability and to detect electrical
provided for referencing by code the special tools and test
or mechanical failure by use of test equipment.
equipment (sec III) required to perform the maintenance
C--Service. To clean, to preserve, to charge, and to add
functions (sec II).
fuel, lubricants, cooling agents, and air. If it is desired that
e. Remarks, Column (5). This column is provided for
elements, such as painting and lubricating, be defined
referencing by code the remarks (sec IV) pertinent to the
separately, they may be so listed.
maintenance functions.
D--Adjust. To rectify to the extent necessary to bring
B-1
